I went to Soussi twice, once with a friend under 21, they never carded us, even for the drinks.
First time the hookah was good, not awesome (Nakhla is pretty basic tobacco IMO) but good. It lasted for 2 hours and 3 coals. The second time, the first coal was very harsh, then the second coal was good. I don't like that they don't give you a pair of tongs to move the coal yourself.
The happy hour is pretty nice though as they do half price on cocktails.
I also tried the Chi cha lounge on U St, and I liked it too, but they card. So now, we go there when we don'