We just arrived from our 4 day stay in Isabel's apartment in Malasaña Madrid and it was even better than we imagined. The house was perfect for a couple with 2 kids (2 and 7 years). Small, but very clean and warm. very well located and that, in my opinion, is the best thing about this house. I think my kids wouldn't mind moving to Plaza 2 de mayo (the playgrounds and all the life of the streets is just amazing!). Isabel was always available in case we needed something. Even the one downside i can find in our stay can actually be a positive aspect: there is no coffee machine in the house (we, portuguese, love our expresso in the morning!) so you must go to the nicest coffeeshops in the neighbourhood to drink your expresso :) we would definetly book this apartment again if we ever return to Madrid (which i hope so!).