Hi Kwstasna,
I have a slightly different solution for you, using a tool I have made that generates embeddable maps from an Instagram account. You can filter by a date range, or hashtag. Photos appear on the map in clusters, as you described.
The tool uses Google Maps, with custom map styles from SnazzyMaps.
Check it out, and let me know if you have any questions.
Embeddable Instagram Maps by The Data Pack
Cheers,
Nick