A very common and ancient motif for guesthouse signage frames figures in a pentagram, usually comprised of intersecting triangles, like so generally but not always
Despite its ubiquity, I never bothered to find out what meaning there was behind it, since unnoticed symbolism governs all such establishments and I was content in guessing the common emblem was the Star of David or some time-out-of-mind male-female duality cipher, which carry enough hidden meaning and glosses of interpretation already. It turn out, however, that there is a quite but not necessarily separate legacy to this design. The society of Pythagoras associated the sign with hospitality since antiquity—imparting protection for travelers. Germanic lore understood the symbol as the footprint of a circumspect swan, stepping ahead and back again and would insure guests a good night’s sleep, warding away sprites and nixies that stir nightmares for those away from hearth and home. They called it the Drudenfuฮฒ, resembling the footfall of its nemesis, and it kept noisome spirits from crossing the threshold by encouraging them to turn right around.
