We spent a week at this place and it was absolutely wonderful!
The place is fantastic in every aspect: it's beautiful and clean, perfect location in the center of the old town, walking distance to all historical sights. It's needed to mention that the host (Marisa) is very friendly and welcoming - she provided us many tips for places to visit and recommended best restaurants in town!
The kitchen is fully equipped - it's very convenient if you plan to have a meal at home. The Central Market is just around the corner, which might inspire you to cook even more:)
Apartment is newly renovated and nicely decorated. If you're planning visiting Valencia - you'll enjoy this place immensely. Absolutely recommended!