We really felt at home with Dagmara and her beautiful family. Her house is in a great position: Bilbao is small, so it can be easily seen on foot, but if you prefer to move around both the tramvia and the metro are really close by.
We stayed with Dagmara for 3 days for Bilbao BBK music festival, and she provided us with great advice to move around (bus 58 in front of her hide is perfect to go to Kobetamendi!), for museum visits and even to go to the beach.
Definitely recommended. Thanks a lot!