Great host. Answers within seconds, extremely kind and preoccupied.
The location is great with metro really close, lots of museus with free fees (at specific days or hours).. All within walking distance... Also Puerta del sol and Plaza mayor is close.
The street is a bit noisy sometimes (well, few bars, restaurants and stuff..but that's not Julio problem..) so I would recommend ear plug (noise blockers) to sleep.
Loved it.