We stayed at Caroline's apartment with friends for a city break in the summer. There were 4 of us (2 couples) in total and the place was fantastic; we really enjoyed our stay. It is almost better than you see in the pictures and very convenient for walking into the city centre and for transport (bus & U-Bahn). Communication was great, and we found the place beat our expectations! Beds were comfortable, amenities excellent and easy to use (e.g. Apple TV for AirPlay), and kitchen well stocked with what you need if you're cooking. There was nothing at all lacking and we had a great greeting and intro to the city from Paul. Highly recommended.