I would not reccommend staying here due to the host Luisa.
We arrived from the airport, unpacked and both had showers before going out. The shower flooded over the base when my girlfriend was inside, she noticed the flooding after getting out. I informed the man who checked us in about it, and didnt make a fuss as these things happen. The bathrooms cleanliness was also so/so, dirt in the sink, hairs - see other reviews - but nothing major.
A little later Luisa appeared, as we were going out and confronted my girlfriend in a very accusatory fashion, Luisa made no apology and obviously never bothered to turn the shower on to see why it flooded.
We had a great time in Bilbao that night celebrating a birthday but in the middle of the night, half asleep, I got up to use the bathroom. Both our "private bathroom" and another with a "toilet" sign on the door are in the hallway, outside the bedroom and beside each other. It is blackout dark in the hallway and I used the other bathroom, on my way back to the bedroom Luisa was standing in the hallway, with her dog, complaining at me for using the wrong bathroom.... in the middle of the night, crazy!
You can see why the shower flooded here, it doesnt drain away quickly enough when on full power. vimeo. com/765415837 (remove spaces on link)
For the rest of our stay we had to lower the power of the water when showering or stop the shower for a bit to let it drain before continuing.
I stopped the video at the end to avoid another flooding accusation by Luisa.
The following morning Luisa sent me a message blaming us again for the flooded shower from the day before, told me to "pull myself together" and not use the other bathroom and to not be "drunk". Obviously the rest of our stay was made very uncomfortable.
Save yourself the hassle of Luisa and avoid this place, as great a location as it is.
Bilbao and the rest of the people we met there were amazing. A brilliant city.
I am sure Luisa will blame and accuse me, as she does in other guests' negative reviews, that is why I took the video of the shower.