We had a wonderful stay at Javier's apartment! The place was very tidy and clean, and more than big enough for the two of us. All the things you need for a stay are provided. At night, it is very quiet for a good night's sleep. The apartment is conveniently situated to both tram and train stations, which will take you to all the important places. If you fancy a walk, that is possible as well. A supermarket is two minutes walking away, if you want to cook your own meal.
Communication with Javier was quick and very friendly. He gave us all the information we needed and helped us with some tips regarding public transport.
We recommend staying at Javier's and will definitely book again if we ever come back to Bilbao!