We stayed 5 nights at Ivans apartment. The communication with Ivan was great. Many tips and insights.
What we liked:
+ position of the aparment in old town "El Carmen", directly at green park Turia
+ little supermarket, bike rental, bars und restaurants all nearby
+ roof top terrasse is superb
+ clean and cosy apartment with AC
What we disliked was..
- we had some dead cockroaches on the floor and even one living one in the bed which led to screaming attack from my girlfriend (might be a climatic problem in old houses)!
- there could be information that the apartment is on the first floor and the terrace on the roof
- toilet flush didn't work properly, tried to fix it provisorily.
All in all we enjoyed Valencia and the stay a lot!