Grand Sirenis Punta Cana Resort: First trip with the SPT membership - See traveller reviews, candid photos, and great deals for. Compare room rates, hotel reviews and availability. Compare room rates, hotel reviews and availability. Most hotels are fully refundable. Most hotels are fully refundable. . Search Beach Resorts & Hotels in Thebes. Grand Sirenis Punta Cana Resort: First trip with the SPT membership - See traveller reviews, candid photos, and great deals for. Search Beach Resorts & Hotels in Thebes.