I have a lot of favorites I'll post! Of the ones already posted I love Lucky and Julian's, but here are some others:
(all images from Nookipedia)
Ursala has one of my favorite interiors and exteriors:
I mean, I'm biased because she's my favorite villager, but the inside and outside of her house looks so cute and comfy to me ☺
And then one I found the other day is O'Hare's. I'm normally not a big fan of the "outside inside" look some villagers have, but his is perfection:
And I love a lot of Kangaroo ones because they're often decorated to be comfy for kids as well- when I had Carrie I ADORED her house so much! I remember giving her a Rodeo ride-on (whatever it's called), and she placed it right beside her dressed, and it looked SO PERFECT!
Julia's house is also really nice and elegant. I like that she has a sleep/work area and a bath area:
Shep's is also just really nice and cozy. I especially liked it when he was on my island because I liked giving him different small things to decorate with, so much stuff went well in his house:
And Flora's house CRACKED ME UP when I first saw it:
I love it because Flamingo's are known for being super social. Like, if a vet has one that's recovering and/or needs to be isolated, they'll often put them in a room with mirrors because then they don't feel alone. So I love how Flora has her "flock" with her
Antonio also has a surprisingly nice, chill room you might now expect. I mean, it kind of looks like a teenage boy's room, but it's not too cluttered OR too neat. It looks lived in, but comfy:
ANd Bonbon, another favorite villager of mine, has a room that fits her perfectly:
And, of course, Tangy has another flawlessly fruity home:
Those are the ones I can think of RN... but I'm sure I'll think of a ton more now that I've posted
EDIT: I now see a few more that I posted had already been posted, but oh well
Here they are with my commentary!