Overall a nice stay. The apartment was super clean when we arrived, the building is recently renovated and is located in a nice area in the old town. Very close to many bars, cafes and the Central Market, a bit far from the metro but when exploring around Valencia you don't need it so often. Be aware that there is a funky smell/odour in the corridor, but you don't feel it in the room.
We wouldn't recommend it for a longer stay but a really great place if you just stay in Valencia for a few days. It has a little kitchenware and the kitchen is not ideal for cooking but making some small breakfast or cutting up fruits was okay.
The balcony was also nice, the apartment is facing Plaza del Carmen and has sun in the mornings and during the first half of the day also. The walls are very thin, but it is common in Spain and we had a good hotel-like stay, perfect for a weekend getaway.