Rubén’s apartment was quite nice. It's located in an amazing spot between the Malasana and Chueca neighborhoods, which means there's a lot of shopping, LGBT night life, and local hip restaurants very close by. It's a very short walk to the metro, and is central enough that if you'd like to walk to any of the major things to see, that is very doable. There's a private bedroom, and the living room has a sofa bed that is probably the most comfortable sofa-bed I've been on. Everything was renovated very recently (it's a new building), and so everything feels very new, clean, and modern.
Moreover, Ruben and his assistant Leticia were very open with communication and provided great tips on things to do in the area, which only helped.