[exschke]

I know it from an experienced friend that the first thing to check is how many months you need to sign, as many places require minimum 2-3-4 months of stay, which limits possibilities.

on checking the web now, it seems very fancy places like to call themselves "serviced apartment" (1000 usd and up).

and I found this description about the searching experience by a foreigner, contains lots of links to actual places and agencies that might be useful for starting your search.
http://www.spikemagazine.com/scatter...ommodation.php