I’ve been to all of the following recently, quite enjoyed them, and think they all would suit your purposes:
- Ruka – Peruvian but leans into Nikkei. Glamourous space. Pricey but good of its kind. A stone’s throw from the Opera House.
- Bistro du Midi – Very solid Southern French.
- Contessa – Swank Northern Italian with spectacular views, but good luck getting a table.
You might consider an alternative like Q Restaurant down the block, which has the poshest ambiance of Chinatown’s hot pot places and has lovely broths.
Another option: The Street Bar at the Newbury Hotel. A very grownup kind of setting (the space once housed the bar at the old Ritz-Carlton), limited menu, but a swell view of the Public Garden, and they treat kids well.