Why are the two balconies (?) different sizes to each other? Also, no one is ever going to be able to get into the cupboard on the left because there is a chair in front of it! Add a space between the table/chairs and the cupboards and the mapping in the bottom of the map would look a lot better.
The balconies are different sizes because I try to envision this place as not having a level ceiling. Usually I do not let a straight square or rectangular map suffice and this was an attempt to give it a sense of dimension in some other way. When the two balconies were even I considered the map less interesting. I see more what you are saying with the chair because I thought the same thing too. In the end, I thought I should not be afraid to have items like chairs obstruct things they typically wouldn't once in a while. What I actually might do is use some smaller chairs.
Edit: Thinking over what I said about the balconies, I guess saying it is an uneven ceiling makes little sense. I still think the perspective of the balconies isn't physically impossible and the arrangement of the room is more interesting this way.