Update June 14, 2020:
I had always wanted to build an all-in-one lot with as many of the rabbitholes I can fit into a 64x64 lot. So while I was working on the college lot, I was also working on this idea. It's called Central Plaza Mall (maybe I'll think of a fancier name later), a commercial plaza that has the bookstore, grocery, cinema, office building, spa, bistro and diner.
Main area. The little building between the diner and the bistro is a comfort room.
Other side of the plaza.
It is placed where the central park was located: