Very nice place for spending fantastic time in Madrid. You don’t even have to ask Mar for help - she’s very friendly and attentive 24/7. Definitely Mar knows everything about Madrid and she will share information with you.
The flat is really well occupied and very comfortable. There is everything you may need and even more. It’s located in the city heart and it’s easy to get touristic “must see”. Finally (guess it’s one of the most point) it’s a warm flat (without any problems with heating).