We stayed in Antonio's place for 5 nights in January, it was a great base to explore Valencia. Antonio was very helpful regarding directions and travel options from Valencia airport, the tram (lines 5 & 8) take approximately 1 hour and are very easy to use. There is a desk in the airport tram station to purchase a travel card from and the journey costs approximately EUR3.60. We used taxi-Valencia for our (very early morning) return to the airport at accost of EUR27, it took 25-30 minutes and they provided a group 1 child car seat for us too.
Antonio's place is well situated to explore Valencia, the tram stop is a very short walk away and there is a good supermarket around 10-15 minutes away (Mercadona). The apartment is well equipped and the outside roof space is beautiful, with a great view of the beach. There are restaurants and cafes below, which would be lovely in the Summer months. Antonio left a lovely welcome pack with hot drinks, and some local specialities to try, and met us to check in also. We thoroughly enjoyed our stay and would certainly return to Antonio's place again!