Just across the road from the park and cycle way that runs from one side of the city to the other. I used the hire cycles a lot. Also located within a very short walk of the centre of town, so and ideal location for evenings - dining, drinks and then a quick walk back. The accommodation is very clean, comfortable good shower and lovely big bed and everything you need for home cooking if required. The manager was very helpful - especially when, on a Sunday evening, I managed to lock myself out!
Make sure you take instructions on how to find the apartment when you arrive, as there are many winding streets to explore and if you're arriving in the dark, some of the street names are not obvious.
All in all I had a great time and would definitely book this apartment on my next visit to Valencia.