Javier was a great host! He is a very friendly and kind person and helped me a lot with info about Madrid. He is also a person you can have a nice chat with!
The place is simple but clean and very comfortable. If you don't need a villa or a castle, his place is perfect!
The neighbourhood isn't fantastic, but alright. In 20/30 minutes you get to the center very easily. It is very well connected also during the nights!
Overall: I'd stay there again, don't think there's need to say more.
Thanks for everything Javier, cheers!