The appartment is very nice, but maybe small in the kitchen and bathroom. The bed was very comfortable and the washing machine was a plus on our trip.
It is only a few blocks from the centre of Madrid and everything is within walking distance. It is located in an area full of bars and clubs, but being inside the building you didn't feel any noise. The downside of this is that there wasn't much natural light, but it didn't affect us as we weren't there much during the day.