Task: Me and my wife decided to surprise my son Andreas Wagner by meeting with him, who is living in Berlin, Germany. I want to stay there in a hotel, so search for the hotel in Berlin, Germany, in the Booking.com app.
Steps:
Open the Booking.com app
Click on the search icon at the top left of the screen to search for the hotels in Berlin
Type Berlin in the search bar at the top of the screen to search for the Hotels in Berlin.
Click on the first suggested option to view the search hotels 
Click on the Search button to view the search result.