Hook Up Xbox Using Free Public Wifi
Borrowing and using the device is free! Up to date with holiday snaps and experiences for free, send photos, log on to social networks and use their. If you have a wireless computer that is already connected to the wifi and has accepted the agreement, you can copy the MAC address of the wireless adapter of the computer and change your Xbox to use that MAC address in the network settings. This will trick the hotel wifi into thinking that your Xbox is your computer.
Xfinity Wifi Hook Up
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He might be able to use a wireless bridge (or a wireless router in bridge mode) in order to set up his own network, but that is hit and miss. It may be against the terms and contract of the housing management, so he would have to check with them first before broadcasting any kind of signal of his own.
Additionally, while the private network may encrypt communication between your father's devices and the new private access point (if he has encryption enabled), it will not encrypt communication from the new private access point and the existing wireless infrastructure. So if you're going for security, this won't help much.
I'm not sure if this would fix the connection issues such as with the chromecast, but it's the best bet unless there are hardwire jacks somewhere, which I'd highly doubt.