It's really enjoyable! It's much much better than the last bunch of super hero movies spat out by Marvel and Disney.
It's got heart and great acting and a pure Indiana Jones plot. Action sequences are solid, characters are well rounded and fleshed out, its never boring and at the end you feel the story has come to a satisfactory conclusion.
You can easily watch it with the kids, as it's not bloody or gory, doesn't drop unnecessary swearing into conversation (looking at you Guardians of the Galaxy).
It's not 5 stars because, you can't be a 'TOP GUN Maverick', every time, but Indy is a solid staple, much improved over the Crystal Skull, and thankfully a great conclusion to this story.
Audience ratings on Rotten Tomatoes far better indicator than the critics poor reviews. I think they (the critics) feel burned as they rated the 'Crystal Skull' highly ... when frankly it was terrible. This is a much much much better movie. Bring the kids and remember that classic John Williams score and see Indy fight his last bunch of Nazis.
Harrison Ford may be old, but in this film he plays it that way, and it suits him better for it. A highly enjoyable watch.