Sergio's apartment is very comfortable for two people. It includes the essentials for the kitchen and the bathroom as well as a perfect wi-fi and heating system for the colder months. While Lavapiés might not be the ideal area of Madrid for families, I would recommend it for its relative quiet. In addition, the apartment is very conveniently located near the metro station as well as near a supermarket open 24h. All in all, a very pleasant stay!