It’s seriously charming, sure, but I’ve noticed that many comedies of this era neglect the most crucial aspect of a good joke: timing. Maybe this is just a product of the editing style of the times; maybe this aspect wasn’t considered as important back then as it is now. I’m not sure, but I am sure that it ruins the flow of many potentially great scenes.
However, though, this one was very good and it’s hard not to appreciate just how influential it was. Giving it anything less than a 7/10 wouldn’t make much sense.