The saving graces for BC Rooms are the location (only 5 mins walk from the Guggenheim museum) and somewhat friendly staff. But this is when it stops. We had a very damp smelling room. After notifying staff we got new sheets (as the smell emitted from the beds) and an air-freshener!!! Which helped for about a day but the smells came back. All hotels were booked during our stay, so we had no other option but stay. As mentioned by other reviewers the 'hotel' must have been a former hostel with all its downsides still present - the walls and doors are thin, you hear the neighbours, equipment is the bare minimum, very small rooms, no aircon just a very loosely rotating fan. Conclusion: this might be an option for an emergency stay for a night, but I'd be looking for another place to stay in Bilbao.