The cheap alternative, common in accommodation, is to put a home router in each unit. It seems to solve privacy, but it creates 72 unmanaged devices, 72 networks competing for the same channels and no visibility of what is failing. When a guest complains, someone has to go to the apartment and restart the device.
In a managed network, privacy comes from the VLAN, not the hardware. The access points are shared and coordinated with each other, channels are planned for the whole building and the management team can see every access point and every connected client from one console. A problem is identified remotely, often before the guest notices.
The role of monitoring
In a building with dozens of units occupied by different people every week, the load on the network changes constantly. Alerting warns when an access point stops responding, when an internet connection drops or when a floor starts to lose performance. That information is what allows action before the complaint, rather than after the online review.