Nice flat in good location. We had a very good time in Valencia in Celia's flat. It offers enough space, including a big terrace (even if this is surrounded by high walls so you do not see much sky). It is nicely decorated in a modern style. Kitchen equipment is a bit scarce (esp. for cutlery and plates), but we arranged ourselves and enjoyed the time. The neighbourhood is local with a some bars, restaurants, bakeries, fruits shops etc. around, and a tiny local street market in the street on Fridays. To reach the cool Russafa district, it just needs a 7 mins walk - lots of very nice bars, cafés and restaurants there. To get downtown you can either walk around 20-25mins, or take a bus. 5 mins walk to the next stop of bus no. 19 which takes you to the Malvarosa beach.
Communication with Celia and Heba for check-in and out was easy (just don't get nervous as the check-in details are shared only on the day of check-in). We recommend this apartment and fully enjoyed our stay!