We stayed in Jorge's apartment for 2 nights. Jorge met us right on time and was very communicative. The location was great. There is so much to see in the historic area; we loved stepping out the door and right into the very cool pedestrian alley with outdoor restaurants. The entire area was beautiful. I wouldn't want to stay in any other section of the city. Taxis were easily flagged and reasonable. The trip to the beach was just 20 minutes. All in all, this was the perfect location, a great place to stay, and a fun time.
Yes, there are stairs, but much of Valencia's apartment buildings are vertical, so it comes with the territory.