It was overall a pretty good experience. I have been to a few teppenyaki places and it is one of the better ones I have been to in terms of value and quality of the food. (Though truth be told value was really good and could be considered 4 star if groupon price was normal price). The chefs there do a couple of tricks including juggling of tools and use of flames to create a relatively enjoyable experience. Has it been the best teppenyaki place I've been to in terms of quality of food no, but overall service and interior was well designed and food was enjoyable and cooked well.
Definitely recommend to give it a try at least once :) especially with the groupon deal as you will be well fed with all the food provided!!!