We were very disappointed with the apartment itself: broken chairs, broken toilet seat, bathroom lock missing and so on - it's quite different from the pictures in the advert. The apartment wasn't all that clean either, the bed linen & towels and sofa are worn and stained, we found glass on the floor in the hall and there is a family of cockroaches that live in the lounge (under the stairs to the terrace). In the end we didn't use the terrace, although it was one of the main reasons we picked the apartment, as it is overlooked by dozens of apartments. Also, the air con is only in the lounge, with ceiling fans in bedrooms which were rather pointless.
On a positive note, the apartment is in a reasonably central location with most things within a 20-30 minute walk. Also, Alejandro was quick to answer questions and very helpful, even booking us transfers from/to the airport. We had an issue with noise from a neighbouring apartment also owned by Alejandro and he dealt with that very quickly.
Overall, this was a very expensive apartment for what it was and is misrepresented by the photos - for the same money we could have stayed in two rooms in a 4* hotel in the centre of Valencia.