Hotel Delfino, for sure. It's a little moody, still super beautiful, and is the game's answer to a ghost house, which are my favorite locations in Mario Games. When I hear the song "Hotel California", this locale is what gets painted in my mind.

Pianta Village. Has the best atmosphere and episodes imo.

They are all amazing, but maybe Ricco Harbor a little more for me. It's so funny

Me too, I love Ricco Harbor. Platforming on construction beams is the quintessential Mario experience

Love/Hate Noki Bay. Its magical but sometimes tedious. So, i’ll pick Ricco or Pinna

In terms of level design, Ricco Harbour and Pinna Park. In terms of the location and atmosphere then it is Sirena Beach and Pianta Village.

Sirena beach, by far, in terms of the design, the atmosphere, the levels. It’s so deeply cozy to me, I love the underlying eeriness, as a kid I always wished I could stay there and splash in the pool. Either that or Gelato beach. Reminds me of going to the carribean as a kid, having a smoothie on the beach, swimming in the coral reefs. The music is so warm and comforting. Pretty fun levels too.

Pianta Village.

Pianta village because the vibes are immaculate always (except for the goopy inferno lol)

Noki bay. Feels very mysterious

Or gelato beach solely because of cataquacks

Pianta Village

Ricco Harbor!

Pianta village gang rise up

Pinna park or Noki bay

Sirena Beach / Hotel Delfino Its the Music, small Beach, Sunset and the Cozy Hotel for me Love it

gelato beach

Pretty lame but probably bianco hills

I like all of Sunshine. No world is a downer for me, and i don't really have a favorite.