The movie was decent. That's the best word to describe it imo.
My little review:
The negative - The beginning was a bit slow paced. Also all over the place. I don't know if it's director's fault or writing but it didn't feel like watching a complete story that has a beginning, middle and the end. Just a bunch of random stuff happening before the inevitable fight in the last 30 minutes of the movie. Too many flashbacks/dream sequences that could've been cut out entirely. The whole Batman vs Superman build up could've been done a lot better, there was barely any chemistry between Batman and Superman before the final fight. Eisenberg played a perfect psychopathic villain master mind. It just wasn't Luthor. Like at all. Unless there's a completely different version of Luthor in comics that I am not familiar with. Also
Spoiler:
don't watch the movie if you're touchy about Batman upholding his one rule because hollysh!t does he kill a lot of people in this movie. And not some vague off-screen fall or explosion, he outright MURDERS folks. Shoots, stabs, crushes them with his car etc.
The positive - The last part of the movie. It was really enjoyable to watch. The action was great. Affleck makes for a good Bruce Wayne. And I really enjoyed seeing Wonder Woman on screen. To put it in simple terms she kicked ass in the short time she was on screen. Doomsday was your average big bad monster as expected but that's what he was intended to be to bring the action. To sum up this is not a great movie, but it is (again) decent and worth watching.
Also Jeremy Irons was great.