Irina's AirBnb is located on the top floor's roof with an excellent view of the old town. From there you could see many of the towers as well as the Cathedral of Valencia. It was comfortable, quiet, and clean. The AirBnb has a kitchen with all of the necessary equipment to prepare and cook food, if you so choose. We visited in early February, so the weather was still chilly. However, the apartment has a heating/cooling unit that worked well and kept us comfortable when we were in there.
From there most things that you want to see in old town are very close to the AirBnb. I highly recommend Irina's AirBnb if you are looking to stay in Valencia.
Note that there is a lift that is operational, but be aware that it will not take you all the way to the top. You will still need to climb some stairs to get to the rooftop where the AirBnb is located.