"an accommodation address"
Er, well yeah, it's called Hacker *House* ;) Lots of small biz is run out of people's home offices. That's basically what it was, a small infosec training outfit run out of a home office.
I completely get why people see this as being a bit weird - not a terribly fixed address, etc. We're doing a piece today or for Monday on WTF's really going on.
C.