We had a very nice stay at Monica's special view appartement. The room was better than the one showed on the pictures so this was very cool. It is very easy to go to the center with the metro. Just one remark, as said in the other comments there is no access to the living room so you can cook (kitchen is very well equipped) but you'll have to eat on your beds.
Private bathroom was unexpected but very appreciated :)
Don't forget to bring earplugs because there can be some noise