The following applies to "Late Medieval Central Europe" and can be validated with primary source data from what are now Germany, Belgium, Switzerland, northern Italy, Poland, Czech Republic, Hungary, Slovakia, and Sweden. Generalized statements about "medieval people" or "medieval cities" below apply to these specific areas and from the dates roughly 1350-1550. For sake of brevity and clarity for the reader this is only being stated once in the beginning rather than over and over again in the text.
1) Medieval people were relatively clean - much cleaner than people in later periods.
Every city had bath-houses, which were for both men and women. Men and women bathed together in the nude on a routine basis. Even the poorest people bathed at least once a week. Some towns even paid for poor people to have baths so they wouldn't be walking around stinking up the place (partly because they thought that bad smells caused disease).
Contrary to popular belief people didn't use pepper to disguise the taste of rotten meat and didn't drink beer because water was contaminated. Food and water safety were tightly regulated and even poor people could afford fresh food except during famines or a siege or some other emergency. Breweries in particular actually required exceptionally clean water to make beer out of, and most breweries were either directly tied into the city water system or built on the site of cold springs.
Brewers guilds actually instigated the creation of some of the first public water systems in some Late Medieval towns.
2) Medieval people were not puritanical or repressed
For example, most medieval towns had city-regulated prostitution, with regular doctors visits for the sex-workers and so on. Nudity was not considered particularly vulgar. Premarital sex was neither uncommon nor cause for panic, particularly in Northern Europe. In some places, notably in several towns in Italy, homosexuality was commonplace and more or less out in the open. The Victorian era of the 19th Century, and even most of the 20th, was far more rigid about such issues. Carnival in medieval times was every bit as rowdy and wild as it is in Venice, Rio, or New Orleans today, and that was only one of several wild festivals which took place throughout the year.
3)There was a large middle class
About half of the population of the larger towns, and as much as a third of the population of the wealthier rural areas consisted of common people who owned their own homes and businesses, had disposable income, had leisure time, and were able to accumulate wealth. Social mobility was fairly high, particularly in the towns, and slavery or serfdom were rare. In the towns the middle class was made up of merchants, artisans, and professionals, while in the countryside it was made up of the gentry, the armed yeomanry, and the wealthier peasants. Even poor artisans could afford weapons and armor, a young journeyman in a typical town, with a half-citizenship, was required to own body armor and military-grade weapons as a requirement for citizenship status.
https://youtu.be/RFpLuJMYJdE
4) It was a machine age
Urban artisans relied on the labor-saving capabilities of machines, especially water-wheels and to a lesser extent wind-mills, as well as machinery such as gears, pumps, cam shafts and cam sliders and so on, to do the drudgery inherent in making metal artifacts, building houses and ships, grinding grain into flour for bread, manufacturing paper and so forth. Thanks to these machines, handful of medieval artisans could create more weapons, ships, or buildings of better quality than 100 Roman slaves.
5) There were many democratic institutions and societies
The voting citizenry of the largest and most prosperous medieval towns consisted of both merchants and artisans, as much as 60 percent of the male population in some towns, as little as 10 percent in some others. The average rate of 'suffrage' however (the number of people with the right to vote) was higher than in Early Colonial USA. In rural areas village leaders were typically elected, as were the leaders of large clans. Mercenary companies elected their own leaders. The Emperor of the Holy Roman Empire was elected albeit only by 7 wealthy princes. The Kings of Poland, Bohemia, and Hungary were elected by thousands of eligible voters. Switzerland was made up of multiple city-states and peasant clans most of whom had elected leadership.
University students even elected their professors in some of the major schools of the day, such as the University of Bologna.
6) Women were not universally repressed
Women generally had rights and were able to run businesses, own property, conduct lawsuits, defend themselves if necessary and lead independent lives if they had the werewithal. Women made up about 15-20 percent of the craft guild membership (i.e. guild masters and aldermen) and also operated between 25 -35 percent of mercantile businesses (more or less depending on the specific time and place) based on modern analysis such as surviving commenda contracts. Female nobles led troops in battle and defended castles and other fortifications. Female abbesses and lay-mystics could wield real power, and female scholars wrote books which were widely read (one in particular wrote explicitly feminist books). Women could even fight to defend their honor or in war if they chose to, though unlike men they were not obligated to do so.
7) Medieval people were educated and literate
Nearly every town of medium size or larger had its own secular public schools as well as schools run by the Church, and most cities offered free education covering reading and writing, geometry and arithmetic for girls up to age 10, and boys up to age 12. Exceptional students could be sponsored for secondary school and / or University, as could students with wealthy parents who could pay. Literacy was near universal in the more urbanized areas such as Northern Italy, Flanders, the Baltic Coast, Southern Germany and much of the Rhineland.
8) Knights in Shining armor knew what a gun was
Not necessarily intimidated by a 'boom stick'. Plate armor arose at least partly in reaction to firearms. Firearms were commonplace in Europe from the late 13th Century onward, at first mainly in sieges. By the time of Boccaccio (mid 14th Century) they were widespread enough so as to seem prosaic (per Boccaccio). Sophisticated field guns and firearms moved into the open field in the early 15th Century and stimulated the development of tempered steel armor.
9) Witches were not commonly burned or persecuted
Witch trials were rare in the medieval period and did not become commonplace until the second half of the 16th Century. Many people were openly non-religious. Magic was considered mostly harmless superstition and was not generally classified as heresy.
10) Medieval people traveled widely
Even common artisans traveled as far as hundreds or thousands of miles during their journeymen years. Merchants from Latin Europe had permanent bases in the Crimea, in North Africa and the Middle East, and as far away as China by the early 14th Century
11 Medieval people were not necessarily under the thumb of powerful aristocrats or priests
Most of the larger cities in Central Europe were Free Cities or City-States which were autonomous and self-governed. Their walls, wealth, and armed militias were sufficient to fend off large armies and they routinely defied Popes, Kings and Emperors when they disagreed with them. Much of Europe in the late medieval period was effectively something like a failed State situation, in which towns, regional leaders known as 'princes', Church leaders known as prelates, and certain clans were strong - but where there was little if any centralized authority.
But this did not lead to economic hardship. To the contrary: This was the fertile ground from which the Renaissance grew.
12 They had their own martial arts
Sophisticated martial arts systems covering sword fighting and the use of various weapons, but also unarmed fighting, boxing and grappling similar to Jujitsu were widely taught and practiced in medieval Europe. There were distinct German and Italian 'schools'. There were a variety of famous fencing masters, many of whom published books which are still in existence today, and there were special martial arts societies or guilds, some of whom had violent rivalries with one another. The martial arts was used both 'in earnest' in private duels, streetfights and on the battlefield, but also as part of warlike sports, which were popular and paid large cash prizes to the winners.