From start to finish we had a great trip to Madrid. Javier was waiting to meet us at the apartment, he showed us around & had lots of tour guides and information for us. The day we left, he let us use the apartment for as long as we needed as nobody else was checking in.
Everything about the apartment was perfect, it was very clean and comfortable, was in a great location, central, safe.
There wasn't air con but the Dyson fans in each room were great - just as good as real air conditioning.
Javier left us lots of food, enough for breakfast each day & of course some beers in the fridge.
I'd definitely recommend it as a great place to stay.