The host is very friendly, and I met his girlfriend who was there when I stayed, she’s nice too. They give you space so you barely notice when they’re there. Also, you have a private (half) bathroom! Don’t worry about brining umbrellas, he’s got you covered. I was lucky that it didn’t rain when I came.
This place is super clean and very close to the center. Everything is about 15-20min walking. At night, the neighborhood may seem a bit sketchy with guys hanging out in the street-not blaming the host at all, but ladies be extra careful. Also, if you come from the airport, take the GREEN bus called Bizkaibus-€3 (and get off at the second stop:Gran via 46). Or spend €20+ on a taxi :)