We stayed here for 4 nights and it is perfectly located to explore the area of Bilbao and Bilbao itself. Great Wifi and lots of info stuff about Bilbao and surroundings. Close to supermarkets and the metro station. Ismael responded quickly to our questions / messages :)
The apartment is on the 5th floor and no elevator, parking lot in a 5min. walking distance. Burning hot water!!! The bathroom is unfortunately really small, the rest of the apartment is very spacious.