Location is probably the only downside. We call this place "Bullet-hole". But seriously, there's a bullet hole in one of the windows.
My Asian friends swear by this place's pho. Trust the Asians, go where they go. Lang Van is chock full of white folk, and oddly enough their pho isn't nearly as good as Pho An Hoa. I always go with the classic: Pho Dac Biet. The broth here is so, so good. Not too sweet, not too salty. But seriously, the broth is where it's at.
Side note: if you're meeting someone make sure you specify the "An" part of the name. There's "Pho Hoa" right down the road, also on Central.