Great location (short walk to Rusafa, but the apartment itself is in a quiet street). Very clean and tidy, excellent communication with hosts, and the hosts also let me check out very late which was very nice.
One issue however is that you will find a constant sewerage smell coming from the bathroom. I think this is not totally uncommon in Valencia, but it's also not really acceptable for a professional hotel/airbnb operation.
It's something to be aware of, but if you don't mind it, then it's a good value, clean and well located ground floor apartment.