Ramon's place was very clean and it is equipped with air-conditioning -- which we didn't even need because it has excellent fans in the bedrooms to beat the heat! Also, the shower pressure was GREAT! If you're traveling with friends, there's more than enough space.
It's located near bikes and buses, grocery stores and pharmacies, and a walk to the metro and the neighborhood is calm. That said, it's in the middle of the sea and the city ... which means no matter where you want to go, there's a travel time. If I return to Valencia, I would probably try to stay nearer to the city. I suggest you rent a bike -- there are many bike paths to make getting around the city easier.
While we didn't meet Ramon personally, he was very responsive through Whatsapp.
Overall, this is a very correct lodging for a week in Valencia.