2. There's no room to the right of the front door in Father Ted inside the house, but there's one seen from the outside. Fawlty Towers has similarly impossible geography.
There's no room
that we're ever shown to the right of the Craggy Island Parochial House. I wonder if that is Mrs Doyle's flat.
If you look on the internet people have drawn or modeled various flats from the sitcoms - mainly American (Friends, Seinfeld, Big Bang Theory). The main problem with most of these is the number of diagonal walls which are obviously only there because they're stage sets.
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Someone has done the same with Fawlty Towers, but seemingly has had to have two versions - presumably to deal with an impossibility somewhere (I haven't checked them).

I might look later to see if anyone can explain why the upstairs set had the ridiculous three steps up and three steps down again at the top of the main stairs.
Wasn't there an American version of Fawlty Towers (actually there were a couple) where the set was an exact replica, but the opposite hand?