We had 18 guests and 2 toddlers. We used Ariel's and it was perfectly kid-friendly. I'm just not sure how you would book it as an intimate - but I'm sure lots of types of events are held there. The space in there is naturally divided into 3 areas - so you can even have a fun kids area. The AAR VIP room (it's a lovely private area upstairs in the AAR) might be a great place to try.