Me and my spouse ate at Seyhmus on a weekday this July. It might have been a little late for prime lunch time... Most of the warm foods were not even warm, not to mention hot. A rather greasy selection of vegetables, potatoes and rice and some vegetable/beans sauce.
For a vegan there were several options but you have to ask, vegan dishes are not marked.
The warm food was nothing special but some of the (many!) cold dishes (middle east style with hummus and other cold, spicy sauces, lentils, beans) were very good.
The bouffet (eat as much as you want) if very reasonably priced. The only dessert option was baklava cakes, not vegan. Too bad, I would have wanted something sweet after the greasy cold warm dishes...
The bouffet also had two different soups. I only tasted one of them, rather lame.
Sorry to hear about the owner not being fair to his employees.Pros: Lots to eat, even vegan, Not too expensive, Easy, relaxed
Cons: Vegan foods not marked, Some of the foods were not very tasty