It is difficult to immagine a better apartment than Elsa's one. It 's a very cozy apartment, comfortable and with refined details; equipped with all comforts, including air conditioning.
The neighborhood is very lively: plenty of restaurants and places to have a drink, always full of people, which makes very relaxing to have a walk also during the night. The presence of all this people does not bother you when you are in the flat, since it is in a narrow, secondary street and all the bedrooms of the apartment overlook an internal quiet courtyard.
Elsa is an excellent host. She was always ready to reply to any request and gave us a lot of suggestions about place to visit and restaurants to try.
Said that, I strongly recommend this apartment and Elsa as a host, and I will take it into account if I will be again in Valencia.