I booked the 'Paradise Room' just a few days before arriving in Bilbao. It was my first time using Airbnb but it was a great choice! The room was very modern and clean. The walk to the Casco Viejo is 5/10 minutes and the tram stop is even closer. There was a bit of noise at night but I was so tired after walking all day that it didn't really disturb me. I arrived after midnight due to a flight delay and Josune stayed in contact the whole time and waited in a nearby square for me to arrive. The next day she talked me through the famous sites and places to visit before I set off ready to explore. Overall, I would definitely recommend staying here.