The apartment is small (1 room), but very nice and clean and has all it needs for a short-period stay. As it was said, it's 5-7 minutes walk from the beach area. For us it was better to use a bus rather then metro to get to city center.
Claudia and Emilio are very friendly and helpful.
We can surely recommend this apartment for anybody. It is one of the cheapest there is in Valencia, but it is surely one of the best apartments we've ever stayed.