Gonzalo's apartment was just great. Communication was easy and always prompt. Check in was fast and simple. The apartment is spacious, very clean and nicely decorated. The shower and beds are excellent. The apartment is very quiet and good for sleeping. It was nice to have a washing machine to do laundry. The apartment is in a fantastic location, on a street full of bars and restaurants, and within 5 minutes walking to Plaza Mayor. I recommend several places in the area for food and drink. The restaurant that shares the same address as the apartment is excellent, as is Astor (a couple of blocks away). In the rustic public market down the street and around the corner, there is a fantastic small place to taste Spanish wines - it is called "Maracuya". Staying at Gonzalo's place was fantastic -- we would definitely stay here again when we return to Madrid.