Gangchen has a surprisingly warm, trendy and well-maintained interior with friendly service. It also has a cozy, quaint bar which seems to attract lots of locals and regulars. The place definitely feels like a classy, understated, never-crowded neighborhood bar where everyone knows everyone.
The restaurant is ostensibly Tibetan, but the bulk of the menu consists of Chinese, Thai and Vietnamese dishes. Tofu or mock duck can be applied to all dishes. Prices are low and the veg dishes max out at $7.99 a piece. Portion sizes are respectable, about as much as you'd get with a lunch special somewhere else.
From what I gathered, the restaurant doesn't put fish or oyster sauce into dishes, so vegans can rest easy. My hot pepper stir fry with tofu was decent but didn't wow me. It tasted just a shade above Chinese strip-mall food and was too heavy on sauce-thickening corn starch. That said, I'll definitely go back to try one of their curries or see if they can veganize a Tibetan dish. I will also try some of their cocktails and see if they can't make a delicious Himalayan drink of some kind.