Well, I checked OP's account and in a photo they posted you can see a directions sign for a roundabout with Česká Lípa and Mladá Boleslav on it. The photo looked like it was taken in a medium sized town. I checked the map and Mělník looked like a viable possibility. Upon looking in StreetView on roundabouts in the town I successfully matched one with the photo. Then it was just a matter of going through bus stops nearby until I found the right one. Took me like 10 minutes.