If you can find an internet cafe or other place fairly close to your hotel which gives you internet acess using wifi, one of these may help.
Alfa Network AWUS036H 1000mW Wireless G USB Adapter NEW | eBay
I know that it looks like a novelty gimmick that won't work, and I thought that until I bought one, but now I have it, I've totally changed my mind.
Using the adaptor, I can easily get on to wifi routers that are 50 metres away, and where ever I've used it, I don't normally have to much of a problem to find an unencrypted open network.
These are the signals available when I use the my laptop connection
and these are what's available using the gizmo I referred to
I'm currently in a fairly quiet residential area so there aren't too many houses close by, but when using the adaptor in a town or city, it's not unusual to get 20 or 25 different connections, a few of which are often unencrypted and with a good signal strength.