The apartment is great and I would thoroughly recommend a stay here.
The hosts were very helpful on arrival with advice on places to eat and to visit. They knew the area well.
The apartment is very nice, but the roof terrace is the main attraction. Lovely views and lots of space. It does mean a bit of a climb to the fifth floor, but definitely worth it.
The location is very central, lots of places to eat and drink nearby, and easy to get to the sites of Valencia.
Valencia itself is a fantastic place to visit.