I agree with what everyone before me has said about a sensitive script, good narrative, and tasteful acting. I went to see the movie because of seeing a talk that Emma Thompson gave (found it on YouTube) about making the movie and how it was about female body shame. I didn't much feel that it was about that. I laughed out loud as much as anyone did, it was easy on the eye and did not drag for me. It is good to talk about these things, and the film would be great for women who do not feel that they can. But I think the audience would be divided on choosing to go see it in the first place. I also wonder whether the film will reach places where it is ok, and safe to even think about, let alone discuss its topic.
I liked the interplay between the characters and the way that Emma and Daryl acted them. But the scenario of the film was a bit far fetched for me - a "Western Culture" child of the 60's following hot upon the heels of the Hippie culture. (same demographic as was being portrayed)
I would not call this a seminal work, nor a 'statement' for all society or cultures, definitely not.
So yes, if you have hang ups that you can't get past, go see it. If you like Emma and want to see a new actor perform very well, then go see it. If you are, however ambivalent about seeing it, or not really keen ... it's an ok film, but not a must see. It was way too light for me. But the friend I went with didn't like "50 shades" and I did.
P.S. I think the film is a good advert for the sex industry, because if it is like that, then it is definitely a noble service.