Thanks for all your comments.
I'll be trying Priceline for Marriott, and if no luck, I'll stay at the Hilton on Orchard, although I was convince to try the Conrad following your comments - but because I only stay one afternoon + one monrning each time and want to look around, i think it'll be easier from Orchard area.
Someone i know will surely miss the teddy bear, so now I'll have to buy one ...