Cello International  style restaurant, Located at: 53 E 77th St. Manhattan, NEW YORK   Phone Number 212-517-1200           Hours of Business: Dinner nightly, closed Sunday.           Average Price: $80                   Cello features what is arguably some of the best seafood in the country. Special tasting menus and exquisite desserts make the experience both delicious and fun. Service in the small, subterranean dining room is doting, and the wine list has been very carefully considered. Reservations required.