It's easy to find equipment to film inside a sauna??? and getting new cables inside the sauna??? Especially if (i guess) it's a rented house???
Agree with you on the part of selecting a house... they seem to get the first that appear... About the cams, being all in wood, i guess on the top was the better place without doing holes on the wood to fix the cams
The hall cam it's easy to answer... they have to had free cams where nothing happen to show... the same way Z&T, E&L, C&S had the 'hall' cam as free cam. Smart managers do like AA&DB house and N&A&S house