Well I think this is a very wanted utility - tourists especially like rooftop (or high floor) places because they like the combined experience of enjoying good food/drink while overlooking the travel location they're in from a high vantage point. And they've got money they need to spend. So if people know when they use this that it'll quickly give them nearby good rooftop locations, i.e. above all else it's reliable, it'll get uptake.

For that reason I don't think the categorization approach is that helpful. The UI that'd be more likely to work is: visit the site, hit "find rooftop locations near me", it asks for Location permission, you get a list ranked by best rated / closest (and then provide location links for each out to popular map apps).

Filtration based on type of venue could happen after that stage if the visitor cares.

There'd still be the option for manual searching for if e.g. the tourist is planning this ahead.