Sariwon is a decent Korean BBQ place, but it is important to know what you are aiming to eat there.
Are you a pork-belly kind of person? If so, Sariwon would provide an "ok" experience, but you'd be best to visit Piggy's Restaurant instead, where thick cut premium pork belly is offered instead of the thinly sliced ones here.
Are you a beef rib (kalbi) kind of person? If so, Sariwon is perfect. Their beef rib is tender, good quality and the marinate is delectable.
When I came here with 3 other friends, we ordered an order of pork belly and an order of marinated beef. A delicious seafood soup and an order of glass noodles were given to us as part of the meal, along with an array of standard Korean side dishes. That was more than enough food for us.
If you are not familiar with Korean-run BBQ places, you have to press the service button on the side to get service. We dined on a Friday and they were somewhat busy, so our alarm were ignored/forgotten several times. It was not a deal-breaker for us.
Overall, I would definitely come here again (for the kalbi!).