Very good movie, very okay sequel
The book, as usual, is far better, but this movie actually does a good job of continuing the story originally available as a story in the late 70s and then later the infamous (yet heavily different) movie in the early 80s, by none other than master filmmaker Stanley Kubrick.
You can expect plenty of unsettling situations, sights and themes, which is why I think it's best suited for 16+, but it's not as graphic or horrifying as it's movie predecessor. The nudity is not designed to arouse, nor really is any of the sexy stuff. The language is pretty standard fare for an R rated movie. The level of blood, gore and violence is high enough that it's not for the feint of heart.
In the end, fans of King or horror movies, or of the original Shining film, should really enjoy this. If nothing else, it's entertaining. It's not a masterpiece by any stretch, but it's far better than most remakes, sequels or well-known book-to-film adaptations.