If anyone needs to store a Swallow in Bilbao for a month or so (as I did this summer), I can highly recommend:
Real Club Marítimo del Abra Real Sporting Club
Muelle las Arenas, Getxo, Spain
Alvaro Basterra, Capitan Puerto
11-48930 Getxo (Biskaia)
Phone
944 637 600
Puerto@rcmarsc.es
www.rcmarsc.es