If you look to a real authentic Madrid experience so now you know where to go. The location of the appartment is just perfect ! Pretty close to the center ( everything can be reached in less than 30 minutes of walk ) but not in the " touristy " area of Madrid. Perfect too if you want to explore the neighbourhoods surrounding the center ( Chamberi is awesome ).
Sol is very very nice and take care of his guests. I don't saw her a lot ( as I was always out ) but she takes the time to write to me for verify if I was missing something and if everything was going well. She replied fastly to all my questions. Totally recommended !