I was greeted by Daniel's aunt who was very kind and explained things to me clearly (in Spanish). She serves breakfast at 9am every morning, possibly later or earlier on request.
The room was clean and simply furnished with a comfortable bed and a small table. There is no chair but this was ok for me as I just needed the room to relax in as I was out most of the time. They have other, larger rooms if you need more than just a bed.
The bathroom has a very good shower and nice hot water.
The location was fantastic and I was lucky enough to be in Bilbao during the August festival. It's walking distance to most places, though it is close to tram and metro if you need to go a bit further.
Wifi worked well and communication with Daniel was prompt.