Hi! Thank you very much for getting back to me!

I've also sent you a message via your website.

I was interpreting your actions as a paid campaign by your company Trziste Prace for booking.com (or similar) to get data imported into OpenStreetMap, which can be problematic - from a technical but even more from legal perspective.
However, if these were places that you visited before, this is acceptable.

Can you confirm that you did not copy other data (e.g. phone numbers, email addresses) from trippingguides.com nor from booking.com?

(Note that copying data from the official website of each respective hotel is completely fine, this counts as doing your own research instead of systematically copying another database) 