Rafa&Jorge are super nice hosts. They replied fast and help us immediately when we had a question. The room we had was nice, big and clean. There were fresh bedsheets and towels.
The flat is less then 5min away from the central market and you can reach all the main attractions in Valencia by walking.
Only negative point of the flat is that it can be a bit noisy if you have other Airbnb people talking loud and going in/out their room or taking a shower late at night, although Rafa&Jorge posted house rules and recommendations everywhere about being kind to others in that regard. But if you bring earplugs, that's the perfect place to stay in Valencia.