Tim Ho Wan PEAK is a Chinese restaurant serving Hong Kong-style dim sum on the third floor of Marina Bay Sands in Singapore. Ordering char siu bao, siu mai, har gow and cheung fun together with warm tea works well. A Sunday lunch walk-in waited about 10 minutes behind two parties, and a 7:30 p.m. visit waited about 20 minutes, with food arriving quickly. Some dishes lean sweet.