My room is 25m². There is a bed, a big couch, a lot of tables, an electric piano and a guitare which you can use (but only till 22:00) and some plants (which you would have to take care for). There is also a big carpet, so you could also chill on the floor. The whole flat is quite cosy (there are even more carpets in our flat).
The kitchen and bathroom is next to my room and there is everything you need.
You would share the flat (all in all it's 120m² I guess) with my friendly flatmate Gregor.