Looking at these pictures again, I can see where a person could be happy in them. These first 2 are neat and tidy, bed, fridge, hot plate, TV. You create a simple life, or keep it simple. You store your clothes, prioritize your needs.
Now these 2 rooms are a mess, too much stuff, and would be suffocating.
Don't any of you remember living in a dorm room? I remember mine being probably 150-180 square feet for 2 people, and I had enough room. I mean, you were in class much of the time, work...you studied in bed as well as slept there. No big deal.
Judging from the layout of the 2nd image, I'd guess that room is 150 sq feet-ish, for 2 people.