We stayed at Javiers House for 2 nights which was the perfect duration for a short city trip to Madrid. The apartment itself is very clean and well decorated although it's a bit small. Nevertheless, it was totaly sufficient. There is also easy acces to Madrid's means of transport (bus, metro, train) which is great for visiting the city centre but you can also walk as it is only a short distance to the main sights (~15min). We'd totally recommend this place!