Last time i stay in INNOTEL Hotel , Orchard Area
Price from SGD 155 Sgl/Dbl (Room Only Basis equal to ~ $US80) .
Room is nice and clear and quite near to Dohby MRT station ( around 5 minutes walking ), Somerset shopping mall and Orchard shopping ( shopping center in Singapore )
the link below may useful with your reference
Innotel Singapore Singapore - Best discount hotel rates