Ramon replied super fast to all our messages with good English. He also helped us to find a private parking garage next to the apartment, helped us with the luggage when we arrived and gave some tips to find a nice tapas place for the first evening.
The apartment was spacious for our needs and it was clean and nicely decorated. We could occasionally here the neighbors and some noise from the street, but it didn't bother us at all.
We have stayed in numerous Airbnb apartments throughout our travels and Ramon gave us the best service we have encountered so far. I can definitely recommend this place if you are staying in Valencia.