I liked it! It was not Rogue One, but it was solid and entertaining. I liked that they kept some of the "Legends" backstory for Han (Sabaac Cards, Imperials, meeting Chewie, etc.) and it was a nice origin piece for him, Chewie, Lando, and others. I liked the way he was portrayed as reckless, confident, and a quick study. Also really enjoyed the attempt to tie together all kinds of other things from the SW universe. Little bits like the mentions of Aurra and Bossk go a long way for me, and then obviously other larger reveals. Even the interactions between Han and Lando were a nice match to how we see them in Empire. I kept away from spoilers, so the stuff at the end was an interesting surprise. I definitely would not have liked it as much if I'd already known some of that was coming.
What I liked most about this movie was the dichotomy between Han's optimistic younger self and the older, more worried version we get in the OTC. The "I have a good feeling about this" line pretty much sums it up. It's interesting how desperate he is to build connections (Going back for Qi'ra, joining up with Beckett's gang, instant friends with Chewie, etc.) versus how reluctant he is to be tied down to anything later in life. I thought it added a lot to his overall character arch throughout the movies.
Stuff I didn't like was pretty minor. It did feel slow to me at times. I don't mind a break in the action, but it was kind of meaningless breaks for the most part. I want that gut wrenching scene of Luke feeling trapped on Tatooine watching the sunset with the powerful John Williams score. I also didn't like how fast characters recovered from tragedy. I don't want to include spoilers, but when things go very bad, usually characters are upset for more than 10 seconds. Luke's obviously upset when his aunt and uncle are killed or Ben dies...didn't get the same feeling here when things went bad, and it just makes it harder to empathize with the characters. I felt the same way with Thor Ragnarok, so probably just my own issue.
Its definitely set up for a part 2 if they want to go that route. I'd give it a solid 7 out of 10.