We stayed for 3 nights at Alexandra and Javier's place. The apartment was sparkling clean and ultra modern with all the facilities a traveller would need (and more!). We liked all the thoughtful touches and attention to detail. The highlight was undoubtedly the incredible view of the Palau de les Arts Reina Sofia / City of Arts and Sciences from the living room. It was easy to reach central Valencia by bus but we chose to walk it every day (around 35 mins) as the town is very pleasant. Alexandra and Javier live close by and were very responsive to questions.
In terms of getting to the apartment, we took the metro from the airport to the Alameda stop (8.80 euros for two people) and chose to walk it there through the lovely Jardin del Turia (it took about 25 mins but this could have been done much faster by bus too). We would not hesitate in recommending this amazing apartment to anyone!