We really enjoyed our stay in this appartment, it is very handy ! The first and main thing is that it is perfectly located : every touristic activity is at most 15 minutes away by feet. It is also right next to a big square (and metro station). Furthermore, the host is very sympathic and understanding.
The only little flare is that one of the neighbour is a shoe maker. So, during the day, he works (with his door open) and makes a little noise.