Louise found this interesting 'house' just a block away from our place, and decided to knock on the door. In my opinion, this was a much better plan than peeing on the welcome mat, so I let her go ahead.
Unfortunately, nobody was home to greet Louise, so we moved on after a few minutes.
However on second glance, I was a little relieved to see that nobody answered. This was because the address on the door was '666' which falls out of the regular zoning restrictions. Clearly the inhabitants here are well connected politically and not to be messed with.