No post, it is on the wall, same also for the "ladies".
I dont think that the toilets being at opposit ends of the building that unusual, especially if it is some form of hostelry, although it looks more like public toilets.
If it is slate hanging on the end wall that would point to a exposed or coastal area.
Another couple of "oddities" are the seats outside of the buildings and the stepped, above ground footing on the building in front on the right.