I'm from Indonesia
I haven't visited much outside my own city ( Bandung ), but i remember visiting the capital Jakarta, and the special region of Jogja when i was middle school *hmm*
I've also visited the Pangandaran beach in 2023..... and Sumedang regency
I also visit the regency of Garut annually
Where else..... hmm, i don't remember visiting Sumatra, Borneo/Kalimantan, Sulawesi/Celebes, Papua or any other island
Anyway, i agree this country is massive even though it's much smaller than the colossal Canada ( your country ? )
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Anyway, Bandung could be your destination, any city has it's shortcomings but i think we have a lot of culinary destinations here *hmm*
Other than that, i'm not sure why you should visit this city, or the Greater Bandung area, maybe visit this Patenggang lake and tea plantations in Southern Bandung?
Eh, i'm sure Canada has many many lakes like that though

, but maybe not the tea plantations
Maybe visit the largest lake in Indonesia - Toba Lake - and eat some Gomak noodle and "Lontong Medan" in the North Sumatra province?