The only restaurants we have not been to are Shutters (CBR-I have stayed here too), Maya Grill (CSR-stayed here also), Il Mulino (Swan), Garden Grove (Swan), Mangino's (Shades of Green-ate at Garden Galley though) and Wolfgang Puck Upstairs. We have been to all the other ones multiple times! So I guess one of those. We are trying Via Napoli and Hacienda de San Angel in October.