I hate giving a lower start review because it's obvious Yolanda does try to be hospitable and this place is in an amazing location! Unfortunately, to be transparent for future guests, the entire apartment was musty/moldy smelling and aggravated my allergies. The photos in the listing do not represent the stay I was provided (no living room, no bidet, no city view). The room was very hot unless the window was open, then the city sounds are let in.
Although not dirty, there was clutter on every surface with little to no room for my own stuff and the bathroom could use a deep clean.
Yolanda did ask repeatedly if there was anything she could do, but these are things she could do nothing about as they are part of the apartment itself.
I chose to stay out more and shower elsewhere until I went to my next booking. I will choose a hostel or hotel for any future starts in Bilbao.