I've only ever gotten delivery from Royal Tandoori, so I can't comment on the ambiance. I rated it a solid as I've been inside the building when it was a different restaurant, and it seems like it would suit an Indian restaurant.

The food, however, is always excellent. I've ordered from other Indian restaurants in the area and Royal Tandoori has been much much better than the other food I've had. Their prices are very reasonable as well. My only complaint would be that they were a little cheap on the chicken in their butter chicken, but this seems to be pretty common at most Indian restaurants I've eaten at.