I think it would be nice to filter by both location and tags. For example, I want to make recomendations for a friend of restaurants in a place I always travel to. I have a tag "restaurants" and I can filter by that, but I can`t filter for posts only made in a specific location at the same time.
Other way around, I can go into the map and check posts in that location, but I can`t filter these posts for tags, that would be an option too.
I know I can create a tag for each location I go, and filter for "restaurants" and "name of location" tabs, but that would not be user friendly.
