I've just come back from a week at Alejandro's beautiful house (family with 3 children, between 9 and 3). It was a very pleasant stay in a nice city. The house is exactly as pictured on Airbnb and is very roomy, luxurious and overall just a great place to spend your holiday. Alejandro was also a very friendly and supportive host.
On the plus side, it has a couple of VERY nice rooms: the big bedrooms are lovely, the bathroom is great, the kitchen is well equipped and the roof terrace is a huge plus. Furthermore, the Casa Montaña restaurant is next door and there's a small shop across the street, as well as a bakery - and the beach or the nearby tram stations are only a 5-minute walk away.
I would struggle to list negatives, but please note the neighborhood is quite noisy. The 2 big bedrooms both face the street and sound insulation is minimal - which will mean you'll have street noises come in all throughout the day, starting at 8am. I didn't bother us as much and there's still a third bedroom in the center of the house which is very quiet, but it's something to be aware of. Furthermore, the house doesn't have a ground level: from the street you'll need to go up a pretty long staircase to actually reach the front door. This makes storing any (rented) bicycles a problem. Although Valencia is bike-friendly, we opted out of renting any bikes because we didn't want to drag them up and down the stairs. Finally, please be aware Cabanyal is not Valencia's richest area. Again, we weren't too bothered as we wanted to be close to the beach and we knew what neighborhood we could expect - but it's something to be aware of. We quite liked the area's atmoshpere and the wonderful Semana Santa processions that come through these narrow streets just before Easter, but at the same time there are quite a few rundown houses, littered street corners and beggars.
Other than that, we can only recommend this property: of all the places we've been to in recent years as a family or as a couple this was surely the best one we've ever experienced. If we decide to come back to Valencia we would only consider one place: Alejandro's beautiful house.