Luisma's apartment is situated perfectly in the heart of Casco Viejo. All the great pintxos bar are right around you in walking distance. There are only couple of blocks to nearest tramway and metro stations if you need them. But it is a beautiful riverside walk to Guggenheim so we recommend it instead of a tram if it is a good weather. The apartment is very clean and airy. We were five adults and had a lot of room for all of us. The windows are facing the old town and it is very nice to sit on some of French balconies and watch the life around. Luisma was very helpful. Our plane arrived quite late and he had reserved some breakfast stuff for us. He also helped us to organize a taxi ride (a taxi for five) outside Bilbao. The wifi worked well and two bathrooms were a plus for five persons. We really liked the apartment and hope to get back there next time we come to Bilbao.