Rafa was a great host. He was very responsive and catered to all our needs. The apartment is even better than it looks. The late check-in is due to a full clean of the apartment which you can really notice. If you arrive early, it is possible to drop your bags in the locker and explore while the apartment is being cleaned. The apartment is around a 5-8 minute walk from the beach front which has lots of restaurants. We walked to the City of Arts and Sciences in around 20-25 minutes. To travel to the city centre you would need to catch the subway or jump in a taxi. I would highly recommend staying at this very nice apartment if you are visiting Valencia.