I highly recommend this apartment. Virginia is a wonderful host and we loved our stay here. The apartment is beautiful, clean, spacious and the location is central and walking distance to all the local attractions (e.g., Casco Viejo, Guggenheim, Calle Ledesma for the pintxos bars, etc.). It is also very close to grocery stores, Abando metro station and renfe train station. We have kids and they really enjoyed the playgrounds near Casco Viejo and Guggenheim we well.
My kids also took Judo classes at Dojo Samurai and loved it (it is walking distance from the apartment). We are very grateful for their warm welcome despite the language barrier. My kids want to go back to Bilbao to visit their teachers at Dojo Samurai. : )