Food:
I'll be honest with you, I judge Korean restaurants based on their side dishes. Nakwon offers a variety of sides with a free refill (sweet!) I usually order the pork bone soup which I find consistently good. The portions are one of the most generous I've seen at a Korean restaurant (tasty broth and plenty of meat). They also serve purple rice with is definitely a bonus.
Service:
There is usually only one waitress when I visit so I don't expect much, however, I don't usually expect much from a Korean restaurant anyways. I haven't received any negative attitude from the waitress but from the other reviews, it seems like other people have...and I am not at all surprised by that. During my visit today, there were 2 servers - both very friendly, quick and attentive.
Final thoughts:
I prefer the Nakwon at Yonge and Finch and First Markham Place, however, this is a pretty good pick for downtown. Prices are fair, portions are generous and location is easy to access.