We had a very good time at Juan & Ricardo's apartment. The hosts were very quick in responding and very helpful. The whole apartment is modern and stylish.
The location is great and you can use all sorts of public transports as they at a very close distance. Because it is very central, it is also very easy to walk almost to all the places of interest in Madrid.
The area Chueca is very busy day and night. We knew this but the apartment is well isolated for noise and it didn't bother us. The only small issue we had was with the pizza place downstairs. When they operate, we couldn't open the front window because of the smell. However, you can open the side window in order to have fresh air.
I would recommend this apartment anytime and would definitely consider renting it again.