Miguel and his mom are nice folks. Great price for the center of Madrid!
Be aware that the bathroom is small. The toilet faces the shower with maybe 6-8 inches between the two. This makes sitting on the toilet difficult especially for a bigger person or someone with longer legs.
Secondly, the walls are paper thin. Conversations, phones, and TV shows can be heard clearly from other rooms. If you're a light sleeper or looking for peace and quiet, this isn't ideal.