I regret placing my campsite and my mayor's house on the spot where they are right now -__- My house is located right in front of a pond and next to a permanent rock which kinda sucks. I also put my campsite almost directly below my town hall eughhh.
putting my police station, cafe, and reset center where they are. I would never have placed the police station or the reset center! I never use either! Also I would change the location of the campsite and maybe my house..
There is only one thing I really regret. That is not changing the basic grey bridge next to my mayor's house into a red brick bridge before moving in Merengue. Now her house is placed that way that if I demolished the bridge, I wouldn't be able to replace it anymore... Stupid programmers. Like seriously, who programmed it that way?! The red brick bridge would fit perfectly with the pavement I use in the living quarters of my town.