Or we could go to Gdansk, which is a lovely city or to Vienna or Praha, bug obviously no one of us is living there... or Edinburgh, the loveliest city of all.
I have so many ideas, but it's hard to organize something from afar, when you don't have the chance to check out places first.
I know a cool location (in a medieval tower), but it only sleeps up to 14 persons :(
Maybe a big cabin in Sweden? I know that my Swedish course will offer a one week stay in a conference like location on a lake, so there must be at least one option available ;)