Spring Sale. Savings of up to 20%. 15% off sitewide and extra 5% off full-size mattresses Sunkiss, Twilight, Breeze and OceanBlue. Shop now! Sweet Night mattresses, toppers, and pillows have an excellent reputation and the best quality-price ratio in the sleep industry. They are best-sellers, having average ratings of 4.5-5 stars and higher, and costing a fraction of competitors prices.