i somehow already did my homework...
cityloft.com.hk studiostudio.com.hk
these are the cheaper serv. appartmetns
then you have thev.com.hk gardeneast.com.hk
most of them are listed here:
http://servicedapartment.com.hk/
i looked up for renting a flat, but since im not sure wether if i can stay 2 months, and since most contracts are for at least 6 momths... think hotel and service app. are the only option