Eduardo and Raul's place is a good base for a few days in Madrid. It's very close to Gran Via and all of the other tourist attracts in Madrid. It also has a nice selection of cafes, restaurants and bars all within a 5-10 minute walk. Tiki Taco in particular is about 5 minutes away and definitely worth a visit!
The flat itself is in a well maintained block. The flat is spacious and the kitchen/living areas are well equipped. I'd definitely recommend to anyone visiting Madrid!