Karsten's place is centrally located, and a delightful place to come home to while exploring the city! Was surprised by the layout, foyer area, and high ceilings - even nicer than pictured. Just a 10-15 minute walk or U/S-Bahn trip from many of the historic areas. Check-in and check-out were both smooth. Ideal for a lone traveler or couple. Will stay there again when I return!