My friend and I just came back from a 3-night stay in this apartment in Valencia. In short, we liked it a lot. The apartment is very well located in the city. It's within walking distance to most places worth visiting. It is spacious, clean and features all you need for a few days stay. In the kitchen we even had tea & coffee.
The bedrooms have windows on the street which means a bit of noise especially at weekend nights but that's typical in large towns and in Spain, in particular.
As for the noise, the ceilings are also strangely not-sound proof and you could hear very well what was happening upstairs.
But these are the only small drawbacks. Otherwise, the apartment is highly recommended for its cleanliness, size and location.
It even features a large terrace where you can have coffee or meals on warmer days. We were happy that the AirCon had a heating function as we arrived in probably the coldest days in Valencia this year.