Matt,
We've looked at a couple of serviced apartment type buildings in HK when we had to evacuate out flat for a couple of weeks and found the following.
-- You're paying a premium over the regular rents
-- The apartments are small
-- Service is limited i.e. no laundry facilities
-- Flexibility .. you're not going to be able to move that 60 inch plasma tv that you just spent your bonus money on, into the serviced apartment.

And I'm sure you know you'll need one of those..
If you're here for 2 years, you should be able to get a 1+1 deal (very common in HK) which allows you to get out of your lease after 12 months. Make sure you tell the estate agent you're looking for a furnished apartment.
It is fairly easy to get temporary help here in HK to do a twice a week clean up / laundry / ironing. Either through an agency (slight premium) or by looking at some of the classifieds in your nearest Welcome or Park 'N Shop supermarkets.
Rents are pretty decent now .. check out the serviced apartment listings we have on our site (about 20 odd are listed) and also check out the rentals on
www.gohome.com.hk should give you an idea.
If you're want to live around Lan Kwai Fong, one of our members has a flat available with some furniture.