Rodrigo's Place was great! He and his aunt, Marina, were very welcoming and full of useful information about the area. Speaking of the area, the Lavapiés metro is literally a two minute walk, near the 24-hour Carrefour. Super convenient!
Although located in a vibrant neighborhood, the apartment itself is off the street and stayed peaceful at all hours. The apartment was clean and very comfortable. It was the perfect size for a solo traveler like myself. So perfect, in fact, that I stayed here on two separate occasions!