First of all, Juan was very kind and was always available for questions. At the check-in he recommended us the best places to visit in Valencia. The apartment was perfectly clean and very very confortable. We had two towels each (one big and one little) and even the soap for the shower. The apartment is very new, in a beautiful renovated building in the center of the city. We had just to walk 10 minutes to reach the storic center and 5 to the new center with all the biggest shops. The apartment was only 10 minutes from the airport with the taxi.
We did the check-out in the night without any kind of problem.