Planning Spanish School + Travel in South America – Need Advice on City Choice in Colombia

Hi everyone,
Starting in early May, I’ll be spending 3–5 months in South America. My plan is to stay in Colombia for the first month to attend an intensive Spanish course, then continue traveling through other countries in the region.

I’ve been learning Spanish with Duolingo for a few months now, and I’d say I’m around A2 level. Since I’ll be traveling alone, I’d really appreciate if the language school also offered social activities or meetups — it would be a great opportunity to practice and meet people.

I’m currently trying to decide between Medellín, Bogotá, and Cali for the language course. Which city would you recommend for a one-month intensive course — considering both quality of schools and safety/sociability?

Any personal experiences or suggestions would be super helpful — thanks in advance!