I enjoyed my stay with Javi and Vereniz. The apartment was very clean and modern. The location was excellent, especially for experiencing the non-touristy side of Madrid. It was a spacious layout which meant the hosts and guests didn't get in each other's way. Both Javi and Vereniz were friendly and welcoming.
Just one negative - it was often difficult to get to sleep because of Javi snoring loudly in the room next door!