Still waiting for the cafe and police station.
Ah, okay. At first I thought it was like that, but then someone told me that a villager suggests it. Good to know, thanks.The cafe is suggested by Blathers, not a villager. You need to already have renovated the museum so that you have a second floor, and wait 7 days. Also, you must have made 50 donations to the museum. Once these conditions have been met, when you see Blathers pondering over something (thought bubble over his head), talk to him, and this will unlock the cafe as a public works project you can build.
if you have a hard time getting a villager to *ping* at you can go swimming with a wetsuit, get stung by a jellyfish and swim around for 5 minutes and that usually enables the first villager to spot you to come up and talk to you.