tbh i think all the wallpaper and flooring look really nice in this game compared to previous ones. it's a shame that the only basic wall colors are blue, orange, & green (where's my basic white, purple, & pink wallpaper!!). i think id have to say my favorites are Starry Wall & and Common flooring. i like all the animated wallpaper, but glow in the dark stars r classical & timeless imo.
The water flooring is my favourite! I like how it actually moves despite the fact it looks weird in my home and my furniture isn't getting wet from it. I also like the small details of how it makes splashing visuals whenever you walk on it.
Of the top of my head, I always love the flower meadows even though I never have a use for them. I also want to incorporate the ramshackle wall and street-art wall somehow somewhere, but I've had to accept it probably won't happen.
I use the marine-pop floor in a room at Harv's and love it. In NL I used it for a blue aquarium room and it was really cool.
For practical uses, I'm loving the brown wedding wall that is now in my main room, the blossoming wall in several colors (blue, green, beige...) because of the patterned curtains and nice look, the rosewood flooring because it just goes so well with everything, the cafe curtain wall... both colors of herringbone floor are wonderful
My favorite wall is a rose bush type of wallpaper that has rain animations, lol I've forgot the name and I'm ashamed of forgetting lol, but I do know my favorite Floor wallpaper name. It's called palace floor and It looks grand when I pair it with my rose wallpaper. I really like it and it get the job done in terms of creating a sort of mellow vibe.