This place is the best! Perfect size for 1 or 2 travellers and has everything you need. Its in a very convenient location near several museums, train stations, across the street from a grocery store, and a quick walk to Sól, the center of the city.
Marisol is also a kind, fantastic host. She'll make you feel at home and help you get an idea of the must-see places.
If you're looking for a cosy home base for your stay in Madrid, this is it!