The apartment was just as great in real life as it looked on the Airbnb photo's. It was clean, modern and had practically everything we needed for a few days stay. The hosts were attentive to our questions and requests. The location is perfect - right in the middle of the old city (which has more bars & restaurants than any other city we have visited). The restaurant opposite the apartment and the baker next door are among the best we found! Just down the street is a handy & friendly bike-rental.
Another tip - bus 150 from the airport costs peanuts and will drop you by the Central Market - 5 minutes walk from the apartment.
All-in-all, a good choice to check-out Valencia.