I've stayed in numerous AirBnbs and Carmen's place is one of the best! The room was spacious and it had all the amenities I needed. Lots of maps and local tips from Carmen. Though Carmen didn't speak English, we were able to communicate and she offered a lot of tips for Bilbao. The place was always clean. Bathroom had all the amenties too. Location is excellent, near Casa Viejo and the Euskotren if you need to go to Zumaia. Highly recommended place!