I've been getting deliveries from Hunan Garden for about 3 years now. The food is excellent, I recommend the ""complete dinner"" value which adds tasty Hot&Sour soup, an egg roll, and steamed rice to any entree. Deliveries are always hot and prompt.
I actually went to the restaurant itself for the first time last week. The location is great, on Market near the Orbit Room. The interior is sort of generic SF Chinese restaurant, but on the airy side. The service is lightning-quick, and the $5 lunch specials are a great value with huge portions.
Recommend: Hot&Sour soup, Shrimp w/Broccoli, Sweet&Sour Chicken, any Chow Mein.
Pros: Central location, Great food, Speedy delivery
Cons: Closed Saturdays, Generic dining area