We've been hosted by Luis (a Carol's friend) during our stay in August.
He was very kind and even helped us to take the baggages up on the stairs. He also gave us good tips about markets/restaurants/things to do ecc...
The flat is exactly as in the pictures, very confortable, bright, with a large bathroom and with an amazing terrace. It is a bit little so is more suitable for 2/3 people.
Very good located in the Old City Centre, (about 2 min walking from Valencia Cathedral).
The bedroom area could be very warm because is right below the roof, but anyway there is air-cond., so no problem.
The only flaw are the stairs you have to climb to reach the penthouse with no elevator. After a hot day spent walking through Valencia it can be really tiring.

The communication with Carol is very quick and friendly.
Me and my girlfriend found it such a good place to stay!