I can't say enough about Fran Almudena Y Dulce and their My Little Apartamento. It was extremely practical for a single traveler (would also be for a couple, and even a family with a couple of kids). Kitchen was quite usable for simple meal preparation, even including a dishwasher. Bathroom was enormous, clean and very well laid out. Bed was large and comfortable. And the place was bright, airy and cheerful. Location was a little gritty but no problems; very convenient to walk to the Ruzaffa area, the Ciudad des Artes y Sciencies and other local attractions. There's a pretty good sized Mercadona supermarket just a block away, which is very helpful. Nothing negative to report on the place. Best of all, Fran and Dulce were extremely responsive to my questions about how appliances in the apartment work, how best to get to an attraction, and other questions. Just great.
I would strongly recommend Fran and Dulce for travelers coming to the beautiful city of Valencia!