Service at Reception was great. Room was huge, very spacious. Bed was comfortable too. Location is a bit of a walk to the Guggenheim and definitely an even longer walk to the old town. Bilbao is absolutely beautiful though, so it wasn't a bother to me.
My only beef would be the bathroom - although there were two sinks available (huge plus!), there was very little counter space to put any of your own hygienic products. Also, the shower was a little stupid... there's no shower door and the person who designed this shower also didn't allow for much room for the water to rise without overflowing onto the floor... so I had to turn off the shower a few times to wait for the slow drain to do its job. Oy!
Otherwise, would recommend this hotel!