We spent a very pleasant week in Maria Isabel's apartment.
The apartment is recently renovated and we didn't miss anything, the owners really thought of everything we could need during our stay (we could have stayed for a month without problems). The bed is comfortable, we had some good night sleeps there. Bathroom - shower and bathtub are just lovely.
Not to mention that the whole apartament was extra-clean.
It is located on a quiet street, close to the beach (3 minutes on foot), supermarkets, good restaurants. The hosts were super kind, they even surprised us with a sparkling wine upon arrival and the communication throughout the whole stay was flawless. When we visit Valencia again, we will choose the same apartment, because it was just perfect for us.