As I was strolling through the Medical Arts building today, I stumbled upon a second (and much larger) space for the Bombay Bistro. It's less than a block away from the original which is on Marquette btwn 8th and 9th...in the same city block.) I think this was a pizza joint in its previous incarnation, but feel free to correct me if I'm mistaken.
The new space is expansive with 3 different rooms and 2 entirely different buffets. The front room contains seating plus a Southern Indian Buffet...a selection of at least 4 different types of fresh baked breads (including idly, dosai and some little donut-shaped thingy), as well as about 4 different spicy vegetarian curries, a few soups and some desserts.
The room straight in the back has a few fireplaces and is home to a slightly less extensive Northern Indian buffet (tandoori chicken, about 4 curries including veggie, beef, chicken, lamb) as well as lemon rice, and gulub jaman and rice pudding for dessert.
The third room is overflow seating / banquet space with a huge TV and seating for about 40 people.
There were honestly too many dishes to try in one visit, but what I had was VG by local Indian Buffet standards. The cost was $10.50 if you chose just one of the buffets, $11 for both. I'm not certain if they offer an ala carte menu during lunch. On the way back to the office I walked by the original location just to see if they were still open...they are, and they still have the Northern Indian buffet over lunch. I imagine the original one will close eventually.