I stayed 1 week with my girlfriend at Eva's apartment. We both did "Home Office" and the internet was really fast all the time. The location is perfect. You have lots of restaurants nearby and a supermarket to get everything you need. The bed was comfortable, the bathrooms were clean, and you have enough space for two people working on the table in the kitchen. And keep in mind that it is a two-story apartment so you can have separate spaces and alone time if you need to.
I can only recommend this place from my experience. If I ever go back to Valencia, I will be staying here again.
Thanks Eva!
(Oh, and as a side note, don't eat at "La Flaca", the restaurant nearby. The food is not good. But there is a Moroccan restaurant down the street and that was reaaaally good!)