Adiran and Saras' apartment is a very nicely decorated apartment with all amenities and quality interiour. It's a 5 min walk to the old city center and close to a metro station. I would epect no problem to get there from the airport or by arriving with an ALSA bus. We stayed one night and only managed to see the old town of Valencia, so we will be going back.
Adrian, the owner contacted us on whatsapp about check in and out times and we managed to meet for check-in right on time. He also did a quick introduction to the town and the practicalities. Nearby there are cafeterias for breakfast. Free parking in the area. Go to the old town in areas like the Plz. Redona and Plz. La Reina for nice restaurants.
Highly recommended.