Unlock Singapore's best beach spots and indulge in the luxurious SO Spa. Members enjoy exclusive daily access to the tranquil outdoor SO Spa. Use Preferential Code to book your room. Sofitel Singapore Sentosa Resort and Spa is a French luxury resort hotel on Sentosa island. Situated atop the cliff above Tanjong Beach, the 215-room property is a haven of tranquility and relaxation with its collection of 4 unique dining establishments, award-winning spa, and a Celebrations and Events Centre.