My sister and brother-in-law are moving to Chelsea. They know little about Chelsea-area dining and want to get to know the area (as do I, who'll be visiting often). What are the must visit restaurants, the fun neighborhood standards, the humble, the old fashioned, the Chelsea favorites? Other food options within a few blocks of "official" Chelsea would be welcomed as well. We love all types of food and are looking for recommendations from sandwiches at lunch to cocktails and fine dining at night. Thanks for your help on this broad request!