Review for Treasure Island Resort & Casino Review For Grand Sierra Resort and Casino (GSR) Google User Jan 2 '18 at 2:33 Hotel is modern with many amenities. Great place to take the family or group of friends. The swimming outdoor pool is really nice with cabanas, infinity pool, main swimming pool, two hot tubs and are well heated for even December swimming. There's an awesome arcade, movie theater and bowling areas for family fun. Casino area has many lounge areas and various restaurants. Rooms are clean, modern, and comfortable. Lastly, the hotel staff are friendly and helpful. View full site to comment or like