We were with a group of 5. We stayed at Carlos Y Nereas appartment during Las Fallas. This is really a great spot, we looked at the crema from the balcony on the first floor, we really had a great view.
It is a great apartment and everything was as expected, clean apartment which was big enough for 5 people (not too crowded with 5) and a perfect shower. I really liked the flexible check in hours. There is a supermarket in a one minute walk which is great. You can rent a bike near by, which i can really recommend. I could stay here next time when I'm in Valencia.