very nice historic atmosphere, that just makes the food taste better.. i've been to gadsby's twice about 10 months ago. a friend of mine who was in the area was introduced to this place and then he, in turn, introduced me to it. the setting is very historic, as apparently george washington had a birthday and gave a farewell speech to the army from its location.
the inside has been modernized a bit (of course) but the layout is very inviting in a 1780's type of way. the tables and chairs are close and sometimes uncomfortable, but the servers in their period-dress take away from that fact. the tablewear has an old feeling to it as well.
the lastnighti was there with my family, they had a period-reenactor who dresses and acts like ben franklin walk around from table to table. he's pretty cool to talk to.
anyway, the food is generally really tasty. the menu is expensive (be prepared for upwards of $25 a plate for something good) but i got the gentleman's pye (really just a shepards pie) my first visit and the george washingtons favorite meal my second time. the gentleman's pye comes with a hearty stew with mashed potatoes underneath a thin and cripsy shell placed on top of the bowl. george washington's favorite meal (not sure of the name) comes with duck, which is quite outstanding and not at all slimy, like duck meat usually is.
my only problems with this restaurant is that their beer selection is lacking. come on! our forefathers were known alcoholics and it's time we ate and drank like they did! if you're not going to have some sort of period-style ale available (even if it was warm!) then at least have something similar on tap. but bottles of regular suds won't do it for me.
other than that, i highly recommend this place!