Wow!! Perfect for a long-stay. Close to tons of restaurants, grocery stores, 10 minute walk to the Rio, and a nice 12 minute bike ride to the centre. Pio greeted us extremely warmly, checked in with us weekly - fantastic communication skills.
The wifi was impeccable. The shower is impeccable. The kitchen is impeccable. The desk/chair is impeccable. Everything is well insulated from the sound, so you shouldn't have too many issues with loud noises from the street unless you have the windows open. There were mornings where I got woken up from the trash truck, but I'm also a light sleeper. There's a restaurant below this apartment, but overall it didn't bother me much.
I wish I had better vocabulary to describe how impeccable this place is, but you'll just have to see yourself when you stay here :) this place and Valencia are magical.