Longtime lurker, first time poster- compelled to say that I absolutely ADORED this production. I'd never seen the show before, and found it really sweet and charming. The music is beautiful, the set is great, and the performances are fantastic across the board (oh man, Laura Benanti in particular was stunning).
I'm not sure the issues some people have with this show are generational either, as some people were saying. I'm in college, and my viewing buddy and I loved this, and we met several other people around our age with the same take. I think the show really is just a simple romance, with nothing else to really distract from that, and that just doesn't appeal to some people. I do see how it might be off-putting to some of the more casual theatregoers of 2016, though, as the score is very classically "musical theatre" in nature and doesn't have the widespread pop appeal that a lot of other shows do.
I do hope this production ends up extending its run. This cast deserves so much recognition and appreciation!