Did you have to do anything special to access the Hotel's wireless network? Did anyone from the hotel provide help or assistance regarding this connection?
Check the properties of the wireless card's IPv4 information, make sure everything is still set to automatic and there are not static entries anywhere.
please post a screen shot of an ipconfig /all from a command prompt referencing your wireless adapter.
Does it seem to be getting good information from the DHCP server on your network, or is receiving an APIPA address?
Also from a command prompt type
ipconfig /flushdns and then
ipconfig /release and then
ipconfig /renew