I very warmly recommend Tom's apartment.
It is very well located in Valencia's El Eijemplo district and just next to the up-and-coming Russafa area. It is also 5' away from Colon market and beyond that the old town. The beach is a 30' bus-ride away. This means you can really have the best of all worlds: quiet and comfort of a bourgeois neighborhood, excitement and buzz in Russafa, historical sights and museums in the old town, walks on the Turia or the beach, etc.
The flat itself is very modern and spacious. It had all the amenities we needed and more. We felt at home very rapidly and enjoyed having all the space necessary for our morning exercising or yoga stretches...
Although, the apartment has an overall minimalist / loft style, Tom's personality infuses it with friendly and qwerky touches.
We were greeted by a friend of Tom's who was absolutely charming and showed himself very reactive and helpful whenever we had a question.
We would definitely return!