Nice place, very central. The host was very responsive and the communication was great. We could check-in early, which was amazing!
The address on the airbnb page was different from the one sent per message with the check-in instructions. We somehow followed the address on the airbnb page which turned out wrong.
We visited Valencia in February and while it was warm during the day, it was quite cold in the evenings. And the apartment was also getting cold, especially at night. There is an air-con to heat-up the place, but it takes very long to warm up the place.
The water heater was enough for one person's shower, so plan the showering accordingly :D it takes sometime before it gets heated up again.
The location is very central and walkable to everywhere in the old town. There are many bars and restaurants around, hence it might get noisy.
Overall, it was a nice stay :)