One night only staying at Hotel St Michel, restaurant advise

We have a Thursday evening and would like to walk down Miracle Mile and around our hotel neighbourhood, maybe stop at an outdoor patio for a drink, people watch, maybe a shop or two but would like a nice quiet dinner somewhere not to crowded or loud, love Italian seafood and Mediterranean type food.

Originally thought of going to Red Fish Grill but am told it is far from the hotel and after having travelled all day thought somewhere within walking distance would be great.

Lots of choices, where would you go??? And would it be necessary to make a reservation?