Liverpool: Falkner Street, 36 thereof.

Chosen, no doubt, for its chippy proximity, number 36 Falkner Street was Brian's paddy pad pad for his dillying, and, lest we forget, dallying, a pad subsequently gifted to John and Cyn as a wedding pressie pad. Or was it? Mr Lewisohn posits the following intriguing footnote: "It was probably number 36, but no one remembers this with any certainty and no document has surfaced - from Brian's time there or John and Cyn's - to prove it."
Hmmm. In 1995, Cyn returned (or did she?) in order to promote her version of Those Were The Days My Friend We Thought They Would Never End We Would Laugh And Laugh And Laugh And Weep Uncontrollably And Laugh Etc.. The above shows her entering for the first time in over 30 years (or was it?).
She seems fairly sure this was the place in the footage, but does say (suspiciously), "It's all changed, obviously". At any rate, this is the living room/kitchen:

As is this:

As is this:

As, ye guessed it, is this:

But was it? I dunno! Funny if it wasn't though!
Ye can view the footage HERE.
Regulah readahs will know the high regard in which I hold the trade edition of Mr Lewisohn's bewk. But having waded into the extended edition over the last couple of days, I have to say it is of a completely different order to any Beatles book I have ever read. It's a masterpiece, an astonishing werk of social history, and anyone with sufficient nous needs to read it. I can say no more (though I will when I've actually finished it).