Victor's place is the ideal location for visiting Madrid. I stayed there for 4 days with my mum and we enjoyed the fact that it was on street level (no climbing stairs!) and the street is very quiet at night with no traffic...
Place is small but comfy and there is everything you need! Shower has good pressure and warm water... Water on tap is good to drink (good taste) and decoration of the place is cute and personalised! Malasana district is wonderful for shopping and restaurants / bars, Calle del Pez is a minute away with some delicious food waiting for you!
I highly recommend Victor's place, great value!