I've recommended Ubiquiti to a few friends and neighbors looking to extend Wifi coverage to the back yard or outbuilding or garage. It works quite well, particularly if you have a wired uplink and PoE switch.
I use it in a couple of offices as well, but it seems like the pros are switching to Meraki due to the better (remote, cloud-based) configuration tools... Do any IT professionals make the case for Ubiquiti over Meraki?