I stayed 10 days in Joan's lovely apartment and enjoyed every second of it. The apartment is beyond beautiful and I had everything I needed. The district the apartment is in is perfect. Not touristy with Tapas-Bars around (try Anyora), the gigantic beach in a 10-15 minutes walking distance and a lovely market hall just around the corner (Mercado Municipal Cabanyal).
The metro station is also nearby and from there you can drive directly to the city center and even to the airport. The communication with Joan was great, fast and informative. Ask him for recommendations....they are great!
P.S.: BEST mattress I ever slept on (including mine at home).