TLDR: do not stay here in the summer. Period. But if you stay in the Russafa area, our best meal in Valencia was at S'Alat.
This was the most disappointing airbnb stay we have ever had. The person who let us in the apartment spoke 2 words to us and immediately left. The place was scorching hot when we arrived, as the advertised air conditioner was not turned on. We later came to find out that the owner KNEW one of the two air conditioners was broken and chose not to fix it. He told us to open the windows for cross ventilation and the place would cool down. Nope. The apartment has 2 tiny bedrooms with no windows, so that does not work. (Owner did provide 4 floor fans, 1 of which was broken.) Both nights, my husband and I moved the mattress on the floor of the living room under the barely functioning air conditioner unit so we could sleep. After back and forth with the owner, I asked for a partial refund, which he immediately declined. Airbnb offered us no help since they said one unit was "functional." We feared for our safety after reporting the situation to airbnb, so I minimized communication with the owner.