Definitely agree. More charming than hilarious, which I think is a good place to be for what is essentially a workplace sitcom that has to walk a fairly fine line of not being so zany it questions what we know about the ST universe.
A comedy in the Shakespearean sense, I'd say. It has a lighter tone that allows in things that are funny, like so much of life, but not spectacularly comedic. Certainly very clever, though --- as I said, they really walk the line well.
The condensed format, and the pacing that comes with it, means there's not a lot of time to waste. I think that's what makes it so effective. I recall talk about Star Wars, where people said the limitations of the original trilogy are actually what prompted some creativity and kept it from feeling bloated --- unlike some later entries (but that's neither here nor there --- just a comparison!).