We stayed in the apartment for two weeks with my wife and really enjoyed it. The apartment itself is quite small (as the pictures show) but it's well designed to get the most out of its space so we felt very comfortable, I believe it would work really well for longer stays as well. There's plenty space to store the luggage so it's out of the way and a good amount of closet-space for clothes etc.
The apartment is pretty quiet as it's located in a courtyard, you hear sounds if people are in the staircase but we weren't too bothered by it. The location is really good, it's short enough to walk to many nice neighborhoods and there's one metro stop almost right when you step out of the front door. We also really appreciated the fact that there's a grocery store right next to the place as well as a 247 market pretty close.
Would definitely stay again, recommended!