If I could toot my own horn for a moment, Gravwell (gravwell.io) has a 2GB/day free license which should be plenty to ingest web logs. We've got a GeoIP module to resolve IPs to locations, we can display geographic heatmaps (see https://dev.gravwell.io/docs/#!search/map/map.md), a variety of charts, tables, etc.
Matomo looks really polished and if it provides the features you need, it seems like an obvious choice. If OTOH you're looking at rolling your own with ELK, Gravwell might make sense.
Matomo looks really polished and if it provides the features you need, it seems like an obvious choice. If OTOH you're looking at rolling your own with ELK, Gravwell might make sense.