Olbido's place is very quiet and is the most clean Airbnb place we have ever stayed in. Daughter Idoia travels much and was away the 4 days we were there. Good WiFi that I could do online work meetings with. She loaned us a transit card which we recharged and so the bus was cheap and super easy to zip into the central part of Bilboa.
Olbido doesn't speak English, but my Spanish got us by. Free street parking required some hunting and waiting, although up the hill seems to have plenty of spaces but appears less secure.