Paula's apartment is the perfect base for exploring Madrid. It's a cool air conditioned space, very well equipped given its size. My husband, son and I were there for two nights without getting in each other's way. There were lovely touches like the jars of tea and coffee thoughtfully left out by Paula.
The rooftop terrace is gorgeous, even down to the neighbouring saxophonist gently playing jazz tunes (don't worry, you can't hear him/her from within the flat).
The local area is great - with lots of vegetarian restaurants close at hand, and a mini-market just on the corner.