It depends on your price range but I would check out Siroc, Dino, Al Tiramisu or Filomena depending on what you are looking for. Bibianna is also excellent, but I don't know if it's considered traditional Italian...it is authentic though with all the pastas made in house.
I hear good things about the high-end Tosca, but I've personally never been.
2014 P Street, Washington, DC 20036
915 15th Street, NW, Washington, DC 20005
SIroc or Bibiana. SIroc has more hearty pasta and Bibiana a bit more elegant. Both are excellent.
Againn, an Irish gastropub, is one of the best choices downtown. Zaytinya for pan-hellenic cuisine.
701 9th St NW, Washington, DC 20001
1100 New York Avenue, NW, Washington, DC 20005
La Tomate and Otello (both in Dupont Circle) seem to have pretty authentic Italian food. Each are kind of pricey, though. La Tomate is a little trendier, with more upscale food. Otello has the red checkered cloth, dimly lit, cramped rooms, like it's from the 60s/70s. Personally I prefer Otello.
Another option is Vace's Pizza (Cleveland Park), which has deliciousm high quality thin-crust pizza but nowhere to sit.
1329 Connecticut Ave NW Ste 2, Washington, DC 20036
1701 Connecticut Ave NW, Washington, DC 20009
Thank you very much, We will be staying at the Mayflower Hotel. Are there any other restaurants you would reccomend relatively close by. Ethnic is great. We live in Los Cabos Mexico and outside of mexican there aren't any decent choices.
2100 Massachusetts Ave NW, Washington, DC 20008
I highly recommend the Bombay Club for Indian food. It's sister Rasika is a little hipper, but Bombay Club is really nice and about 2 blocks away. Make sure to get the crispy spinach appetizer.
Equinox across the street is another really nice place for seasonal foods, but more upscale.
For ethnic you might have to head a little further. There is good thai at Rice and Regent. Mai Thai isn't too bad though, and very close.
Also there is Penang Malasian Cuisine which isn't bad either, I haven't been to Malaysia Kopitam, but have heard good things, you might do a search on here. P st. has a lot of small sushi places, I forget the name of the place I always used to go... it might have been Sakana, it had a great sake list and Pesce which is pretty good for fish. Hank's Oyster Bar is further away, but it has good New England style seafood.
Also Vidalia isn't too far and has Southern food. It is more upscale definitely walkable.
If you are there during the weekday the Greek Deli at 19th and M is wonderful. It will have a line, but it moves fast. Also Zorba's has good, cheap greek food. Not great ambiance though.
2016 P St NW Ste 1, Washington, DC 20036
633 D Street, NW, Washington, DC 20004
815 Connecticut Ave., NW, Washington, DC 20006
1200 19th St NW, Washington, DC
1120 19th St NW Frnt 1, Washington, DC 20036
4710 Eastern Ave, Baltimore, MD 21224
Hank's Oyster Bar
1026 King St Ste 1, Alexandria, VA 22314
1990 M Street, Washington, DC 20036