Absolutely wonderful location, convenient to everything - multiple metro stations, restaurants, shops, cafes etc. Quiet apartment on a very nice narrow street.
Maria is an excellent host - very welcoming and helpful. Went out of her way to make us feel at home and suggesting places to visit and restaurants etc. Made our visit so much more pleasant.
The only thing that surprised me was no air conditioning. I just assumed this for all apartments in Madrid (did not check). It was a hot weekend - and Maria immediately provided us a fan and followed up with us to make sure we were comfortable. The patio also does help.
I would consider going back there.