We stayed at Guillermo's place for a couple of days in Valencia. The communication for check-in and after went smoothly, the apartment was very clean and spacious. The area is close to the beach and connects you to the center rather easily. Some nice restaurants and coffee bars are near. We found a parking spot in the street with some luck as it was quite packed.
We did not use the kitchen really, but there seemed to be enough available to cook if you'd like to. The temperature in the apartment and on the patio was pleasant but it was already October so not super hot anymore.
Overall, nice stay and would recommend!