Loved this apartment. Host was very responsive and flexible. Didn't meet Jesus personally but was greeted by a colleague who gave me the keys and showed me everything I'd need.

The positives:
-There's a gas heater which keeps the apartment very warm.
-The location is a side street so it's very quiet (the only noise is the church bells, but this isn't bothersome)
-Right next to San Miguel market, one of the best gourmet food places in Madrid
-Bed and sofa are very comfortable
-Big widescreen TV with plenty of channels

The negatives:
-No shower hook, so showering is not 100% convenient, but this is a minor concern.
-Technically there's no door for the bathroom/toilet, but it is tucked away in a corner in the bathroom area, so there is still privacy, but it's not 100%. I stayed alone in the apartment, so it wasn't an issue, but you may want to ask about this if you are more than one person staying.

All in all, loved my stay here. Highly recommended.