What should I say about accommodation if I have not yet booked but have researched nearby options?

You should mention that you have researched accommodation options near your university and are aware of choices like university halls, private student residences, and shared rentals. Explain that you are actively exploring these options to find the best fit for your needs and budget, but have not finalized a booking yet.

This shows you are prepared and proactive, while being honest about your current status. You can also add that you plan to secure accommodation soon and are confident about finding a suitable place before your arrival.