Nice looking appartment, in a quiet neighbourhood, but only a 5 minute walk away from the city center and different neighbourhoods where you can find good restaurants and bars. The rooms were clean and well equipped.
The check-in went well, but there was only one key for three rooms. The apartment could use some basic reading material about Bilbao, or some street maps, I'm sure many people would leave it there after their trip.
We had a very nice stay in Bilbao, and the apartment had a big part in that.