Another approach to this which I find gives more flexibility is the dlink
DWL-G730AP. This is a pocket AP which has a router mode. The wired end talks to the hotel network and gets dhcp address, and you connect to the wireless side and get an address from the AP. It does masquarading NAT also so if you have multiple devices they appear as a single device to the hotel - some hotels charge per IP address used.

This is great when staying at friends and family places who only have a wired connection - just plug the ap into their wired router. Also you can configure the wireless encryption on the AP with the same credentials as your main wireless network, and so no need to reconfigure whereever you go. Plug it in and turn it on. Comes in a pouch and everything!

Asus also have a pocket AP that appears to be more flexible than the dlink, but I haven't tried it out.

Which hub and dongle are you using?