Madrid was awesome and a lot had to do with the apartment and the area we stayed in. Puerta Del Sol is a great place. Ramon's listing is exactly as described. The apartment is very cozy and the AC works great. We were asked to turn it off while not in the apartment, and if you stay here, don't hesitate to turn it off because the ac cooled the place down rather quickly when we got back in. The apartment was perfect for my family and I (4 adults, 1 child).
IMPORTANT NOTE: If you cannot stand street noise, do not rent here. This area is very trendy and on a Thursday night at 3 am people were still chatting and drinking downstairs. This was NOT a problem for my family and I but I want you to know this because 1) it would not be wise for you to rent the place if you are sensitive to noise and 2) it would be unfair for you to leave a bad review about the apartment because of the noise when you were already aware of it beforehand.
As for the host:
Ramón was quick at replying and his business associate, Marco, was the one who delivered the keys and did the walk through. To say he is nice is an understatement. He is fantastic! Marco was the one we communicated with during our stay and he too was extremely quick at answering our questions.
If you're thinking about renting this place, go for it. It was an overall good experience and I would stay here again.
Gracias Marco!!!!