Me and my wife visited Valencia and stayed at Javier's place about a week ago. We both ABSOLUTELY loved the place.
Location - Can't get any better than this. Lots of shopping in walking distance. Mercadano (grocery store), El Cortes Engles (shopping mall) 2 mins walk, lots of cafes, restaurants, main train station, central market, central Valencia, is walking distance. Did not use the car except when we visited Altea (Javier recommended and is beautiful).
Host - Javier is wonderful to work with. Check-in was a breeze. Provided precise instructions, speaks very well English. Very quick to response. Had a locker issue (would not open), he came within 30 mins and fixed it himself (just had to replace batteries). Provided lots of recommendations.
Place - Very clean, On 6th floor, 24 hr-concierge, has a covered Parking spot right in the building (big +). Has Dishwasher, Washer/Dryer unit. Full size refrigerator.
Definitely recommend!!!