Hey castor-troy, welcome to Eurobricks! Now this
is my favourite kind of introduction - straight to the point and, wham, there - an awesome MOC!
I've been looking at reference pics for Irish Pubs myself for quite a while now; planning on building one later on - which is why I absolutely love your depiction of it. Very realistic and, obviously, with the general brown colour scheme of the first floor and added greenery here and there, it is just spot on. My only suggestion would be to consider putting up a some sign or shield of sorts next to or above the entrance. Don't get me wrong, "PUB" works fine, especially in combination with the mandatory Irish flag, but from what I've seen in real life, those kind of pubs generally also use lots of signs depicting harps, clovers or misc leprechaun accessories, so I think some of those would work really well there. Then again, there's always the issue of cluttering up the facade too much, and this one looks perfectly fine as it is right now...
Oh, and great idea on combining the building's third floor with the Cafe Corner and having a natural progression of sorts. They really do look brilliant; what a sweet complex - so does that mean that the third floor here also provides hotel accommodation?
By the way, do you have any pics of the interior? I'd sure love to see those minifigs order their draught beer.