Harvard has 16 undergraduate dormitory areas, and the situation in each building is not exactly the same. Some buildings are very old and don't even have air conditioning (of course, there are holidays in hot summer, so it doesn't matter), and some are very new and modern. Everyone has his own small room. Generally speaking, rooms are very small. The smallest room can only hold one bed, even the table, so there is a living room. Some rooms are very big, but there are two or even three people. The situation in the bathroom is different.
Dormitories are forcibly changed every year, usually by lottery.
I haven't seen the film you mentioned, but I have been to Harvard dormitory many times.
Students are basically satisfied with dormitories and canteens, and Harvard canteens are more delicious than some other universities. Daily recipes will be published online.