Best "wow" restaurants for atmosphere/decor

Hi all,

I'm booked for October and am on a meal deal, with Downtown currently booked for Dinner every night of our stay, as we are in the Marvel Hotel.

I'm happy enough with that but I just wanted to know what people's opinions are on the alternatives, mainly for dinner.

Are there any restaurants that give a wow factor in terms of design, decor, grandeur?

I'll have my 14 year old son with me, and my wife who is a Veggie and Gluten Free (which obvs presents it's own major challenges lol), so if the downside is that the food is a particular let down then I'll need to consider that.

Thanks in advance.