For future development, I would recommend simplifying the current onboarding flow. The existing questionnaire asks users a long series of questions about their interests, preferences, and travel habits, making the experience feel more like a form than the beginning of exploring Warsaw.
A stronger direction would be a lightweight, visual flow inspired by Spotify’s “choose your artists” experience. Users could select at least three interests, such as history, cafés, parks, street art, or architecture, from a simple visual grid, giving the app enough information to personalize recommendations immediately.
The main benefit would be a much shorter path to first value. Users could reach a personalized home screen within seconds, while deeper preference settings could remain optional and be refined later in the profile.