There are no houses directly beside mine, but Kid Cat is the closest to me. I love having him close, but he's a block too close and ruins my sidewalk lol
I guess Stitches is closest. Well, Grizzly would be, but he's across the river so he doesn't count lol. But Stitches is just a little bit away from my house.
I've got Tammy's house just below my house, so she's my closest neighbor, which is unfortunate as I'm not the biggest fan of her. Luckily she's left me a bit of space to put flowers and stuff.
Marina lives closest to me. She to my right but still a bit away. My other characters are my closest neighbors. One lives directly above and another directly below.
I have the houses lined up like a tiny neighborhood on the east part of my town. I live somewhere on the south near the beach. You could say the one closest to me is June with the river separating our houses.