Another Benbow. The card looks like a generic example, since it doesn't quite match up with the building that's there today. If you look around back you can see where the pool used to be, and it doesn't line up with the picture.
It's intended to give you the general idea of a Benbow, not THE Benbow. I'm sure I have this card somewhere else on the site. I'm sure someone who checked in and looked at his room and looked at the picture on the postcard shrugged and said "eh, that's probably one of the hoity-toity rooms. And since I neither hoit nor toit, who cares."
Yes, I'm sure that's exactly what he said.