We had a good time staying here. The studio is as shown in the photos - compact and very centrally located for walking all over Madrid. In fact, El Rastro markets were literally on the doorstep. The apartment has everything you need and is plenty of room for two people.

We had a small issue with the door after picking up the keys from the cafe next door but Ulises was available by phone. Afterwards, we didn't have any problems.
He has helpfully provided lots of leaflets and brochures of things to do in Madrid.

Would recommend staying here, it's very easily accessible by metro or foot and in a good area with lots of cafes and restaurants nearby.