The bad:
The only real downside to this dress is that there isn't any sort of clasp at the top of the zipper (it zips up in the back) and so it is possible (unlikely) for the dress to start unzipping on it's own.  It's a simple fix, you can put your own clasp or button at the top.

The good:
Just about everything else.  This dress, as the other reviewer said, is really flattering.  I ordered a medium (I'm 140lb and 5'3) and it fits like a glove.  And it flatters my figure really well.  It feels great, it looks great, it's really very nice.  The dress is long and goes well past my knees.  It's a really modest/conservative look and I wish there were more dresses on the market like it!