Bego and Carlos' apartment is absolutely first rate. It is spacious, superbly well equipped, beautiful and light and airy with balconies on each side. It is very well located being only a short walk from the old town, but just far enough away to be in a quiet neighbourhood. It is not the cheapest, but it should not be and if there were 6 of us and we had paid the additional charge, it would also provide excellent - rather than just good - value.
Carlos' communication was always quick and thorough and his welcome went above and beyond. He took time to show us the flat, but also how best to get around Bilbao to see what there is to see and also left a very generous array of food and drink for snacks and towards the first day's breakfast.
I hope to stay in the apartment again and I will certainly be recommending it to friends and family.