I am dining with an 83 year old and her 90 year old husband who uses a walker plus a mid-sixties and her 87 year old husband.They would love somewhere quiet so that we may talk.
The newer places generally tend to be noisy so you’re right to be concerned. The Setai recently redid its courtyard which is really lovely. So you could have drinks there and then move into the restaurant. Another good bet is Byblos which I recently wrote up — wonderful Eastern Med cuisine and it wasn’t noisy when I went even though the room was full. Or you could try The Deck which is fine provided you leave before the DJ comes on around 10 p.m.