Carolina's place was perfect for our stay in Bilbao. The location was very central, with many shops and cafe's close by. The place itself was on the ground floor so no walkup is necessary. It was clean, spacious and had many extra towels and blankets. A perfect place to stay in Bilbao.
P.S. if you are planning to drive there, book your parking spot in advance using an app such as parcklick, as the parking nearby is not good and the roads are very narrow.