The best travel insurance I've had and used is World Nomads:https://www.worldnomads.com/
They service more than 150 countries, and I feel like they're reasonably priced. In my case, they covered a hospital emergency room visit and their customer service was a breeze to work with by phone and email.
Some people might argue that you don't need travel insurance, and while I don't always buy it and I rarely have needed it, I think it's one of those lessons that you would probably learn the hard way if you didn't have it (and needed it). I guess I'm telling you to do what I say and not what I always do. haha
Would love to hear if people agree or disagree, and of course, if there are any other recommendations people have.