Wonderful apartment - beautifully decorated and wonderfully comfortable for our family of 4 for 12 days in Berlin. The apartment has lovely high ceilings and gorgeous huge windows, which were lovely to have open as we were there in summer.
The location was PERFECT - quick and easy access to Mitte and the heart of Berlin. Sudkreuz (the nearest station) is a transport hub and so made it super easy to get around - it's about 20 minutes to get up to the Brandenburg Gate area for sightseeing. The neighbourhood that the apartment is in is also really interesting - there is a Nazi memorial prison right around the corner and a really cool area that was a 15 minute walk (or 5 minute electric scooter ride) away with beer gardens, wine bars and restaurants.
My only issues with the apartment were that if you're there in summer, it can get quite hot as there are no fans or anything. Fortunately, the apartment has windows on both sides, so you can get a cross breeze. The internet was also quite slow.
I would recommend this lovely spot without hesitation! Thanks so much for a great stay!