Very pleasant apartment with all the amenities you need. Close to Matiko metro station. It's up a steep hill so do learn how to use the metro. Also two lifts from the Funicular station help if you're on foot. Bilbao is a very good city for public transport and access for disabled people.
We stayed with our 3 year old son and we all loved it. Playgrounds very close by. Also some nice relaxed bars. It's lovely to sit out in the evenings while the kids play and parents have a drink.
Good supermarkets quite close and you're approx 20 mins walk from the Guggenheim. Highly recommend taking the Funicular which is 5-10 mins walk away.
Apartment is tastefully decorated and clean. Good kitchen and bathroom. Small outdoor area at rear of apartment. 1st floor and there is a lift if you don't want to use the stairs. Roberto met us at the apartment and gave us lots of helpful tips and pointers. Loan of Barik card for public transport much appreciated.