Very smooth and well-organized check-in. Our original train was canceled, so we arrived earlier and could access the appartmen event an hour before the official check-in time, despite short notice. That was great - thanks! The appartment is spacious and spotlessly clean, in size ideal for our group of six. It is equipped with everything you need - but don't expect luxury. Its simple. The area is not one of Berlin's best - but you will find yourself close one of the city's local traffic hubs (Südkreuz) with excellent connections to the airport, main station, and all the major sites. Overall, if you're looking for a relatively budget place for a larger group with good access to Berlin's public traffic network this is definitely a good choice.