Michael's apartment WiFi network security is wide open, with logins based on the apartment numbers and the office phone number as the password. And they won't allow him to change his password. The best solution is to lobby the apartment management to allow him to change the login password.
If they won't do that, he can always attach a "travel router" to the network. Leo uses them at hotels that offer WiFi. Use that router to log into the access. It'll act as a firewall against others doing the same. That'll make Michael private. DLink makes a really good one. TPLink also makes them.
The other way to go is a travel VPN, but that requires an additional subscription.