Paola is a super friendly, warm hearted host and the location of her apartment is just great: right in the middle of the centre!
So we had a very nice stay and as Paola is always happy to answer questions and to provide recommendations, we saw some places,
we wouldn't have found without her.
Just one tip, as Madrid is a city that rarely sleeps:
Bring some earplugs. ;-)
I would recommend this in general if you stay in such a central area, friends of us stayed in a 4 star hotel, approx. 70 metres from paolas place, with a room next to the street - they needed earplugs, too.

So if you look for a central place and a very nice, helpful host, who likes to talk with her guests and shares her knowledge about Madrid, I would definitely recommend Paolas place! :)