Really nice apartment for 5 people. Sophia, the host is really welcoming and will help you with any kind of questions. The apartment had everything you need for a short stay and it was really clean. One minor thing that could use some improvement is the bathroom door which got stuck halfway through and was therefore hard to open and close. However this is just a small deficiency.
Since the apartment isn't in the city centre you need public transport to get there. This worked well for us. In the evenings/nights public transportation is more difficult since metro and tram don't have long working hours and there are only few night busses, so you might want to check how to get home or what other means of transport there are.
Other than that we really enjoyed our stay at the apartment as well as in Valencia and we would gladly come back.