We stayed for 5 nights at Eva's apartment in Ruzafa. Ruzafa is a great place with lots of good bars, restaurants to relax in when not exploring the rest of Valencia. If your from Manchester (like we are) its comparable to the trendy Northern Quarter.
The apartment is on a quiet side street and is all you could want, spacious, nicely decorated and clean.
Our host Eva was great. She waited for us patiently when we were late arriving. She is a Ruzafa local so has some great suggestions for things to do. For example while we were staying there was a rice festival, with great music and Paella that we would have missed otherwise.