Xabi & Almu's apartment looked just like the photos. Perfect compact size for two adults and a child and very clean with all the kitchen utensils you need. Shower, washing machine, & wifi worked great too.
Casco Viejo is the old town of Bilbo/Bilbao and a very historic district--it's also full of bars and cafes that are open quite late with many lively revelers lining the street. A great place if you want to be in the center of the action. If you hope for peaceful views with less noise and late night activity, this is probably not the neighborhood for you.
Bedrooms were very quiet and dark (great blinds "persianas" that block out all the light), however windows open to an interior space, so not much of a breeze coming in there. Front windows/balcony provide tons of air and a view of the street activities, and total quiet when closed.
Parking was in the nearby garage and was approx 20 Euro/day.
One floor walk up made carrying luggage up super easy.
Hosts were very helpful in advance of our visit.