Some ideas of what to do in Sofia. Places to see, food to try, coffee places to enjoy :)

https://urban-wanders.com/a-complete-travel-guide-to-sofia-bulgaria/

A video guide of Sofia:

https://www.youtube.com/watch?app=desktop&v=zc32qU1qH2c

An Instagram page with even more tips of how to get the locals' experience ;)

https://www.instagram.com/experience.sofia/