Very nice. Venezuelans, Colombians, Guatemalans, Panamanians all told me to go to Medellin and I had a great time. Everyone was nice, great public parks, very decent monthly rentals on Airbnb and really cool public transit where you can take cable cars up the mountains around the cities. Good hikes with exercise parks at the top.

Medellin is now my alternate start-traveling location I recommend for affordability, health care, culture, food, and general easygoing-ness. It has most things Thailand has plus a way more comfortable climate.