We provide Free WiFi to a number of hotel/condos using our WISP network (currently UBNT but on the fence about switching).
A number of these properties are owner-occcupied units, and the unit owners wants individual internet so they can connect a router with wireless printers, etc. The cable company happily obliges by installing cable modems and selling internet directly and currently charges $70 a month for their unbundled package (since the "included cable" with the condo isn't included as part of your "bundle").
I was thinking about using a TwistPort 90 degree antenna with EPMP 5ghz APs on the outside and providing the residents who want private internet with a Force 180 unit with a small window or interior wall mount. We only need to add an extra AP in order to provide this service (wiring is already run, just need to add a POE siwtch or use an ethernet passthrough and VLAN separate the networks)
I'm wondering if a EPMP AP on the outside in 5ghz could penetrate a few concrete block walls/windows to a Force 180 on the inside the building at a distance of 150-200 feet away from the AP max.