CNN) When the reception desk is staffed by a robot dinosaur, the chances of a room upgrade are going to be fairly slim.
That hasn't stopped the first guests checking in to what's billed as the world's first robot hotel.
The five-star Japanese Henn-na Hotel -- a name that translates as Strange Hotel -- this week opened its doors to bemused visitors to Huis Ten Bosch, a theme park in Nagasaki Prefecture.