Sergio is a very good host and a really nice guy. He was helpful every step of the way. The appartment is cosy and clean, very well located in a nice popular area in the center of Madrid. It has everything you need with a great bathroom, dishwaher and washing machine, internet and TV. The only small problem is the noise outside when you sleep on the couch in summer with the windows open because of the heat. with earplugs it is ok though and the bedroom is not on the street so way more quiet. Anyway if you want a quiet and fresh place, the center of Madrid in july is probably not for you...
The price is very reasonable. I recommend this place and would definetly come back if i get the chance.
Mat