Just came home from watching it. I've read it quite a few times, both out loud to students and by myself, so I didn't go in completely blind so to speak.

Still, it managed to confuse me a few times, especially a few conversations, and at some points, a little who's who. (Might just have been me, though. See below).

Still, overall, it was a pleasure to watch. Damon gives one of his best performances. It's perhaps not the best he's ever done, but he's good enough to carry a large part of the movie by himself. There are other standouts as well, a few from his crew, and Pattinson is his usual brooding self, which fits right in here. Casting Tom Holland as Telemachus perhaps wasn't completely fair to his capabilities, but he did well enough with his limited time and lines.

It's quite hard to write about further details without spoiling stuff, but one thing I can say is that the scenery is very well done. If you go in expecting Greek summer sunshine, you're in for another thing altogether. The backdrops were gorgeous. The CGI is also quite well done, imo.

Anyway, to be completely honest here, I have issues with my spine and right leg (the ischias nerve) so I'm pretty heavily medicated and that might have put a positive tint on the whole thing, I don't know.

(tl;dr) Still, in my opinion, it's very much worth watching, and if you can afford it, it's worth watching it in a movie theatre because of the effects and sound.

Edits: I had to repair my broken and not very sober English after the fact.