We chose to stay at Jaime's for Las Fallas 2017. It's in a fantastic location, just off the main square. Plenty of cafes, restaurants, and shops just outside the door. Everything is in easy walking distance. It's close to the main train station too, which is an added bonus.
The apartment is lovely, very clean, and comfortable. It has been refurbished to a high standard, and has everything you would need for an enjoyable stay.
Jaime is very helpful. He will let you know of places to visit, places to eat, and pass on his recommendations to you.
All in all, a very good host. Highly recommended.