City : Berlin
Where : 2 blocks south of Charlottenburg S-bahn station.  Corner of Kurfurstendam (KuDam)
Website : www.propeller-island.com

Short Version

A must-stay hotel in Berlin, but be ready for something very out of the ordinary.  Staff so nice you’d swear you were family.

Long Version

Check the website: if you are concerned, don’t go.  If you are intrigued, go for it.