It was very easy to get in contact with Maria and she replied quickly when we booked.
The Apartment is nice and roomy and is situated extremely well: Just a few 100 meters from both Friedrich Strasse and Oranienburger Tor U-bahn.
With the two separate bed rooms the flat is ideal for sharing with another couple - you still share each others company, and at the same time you can easily retire to your own private space.
The stereo with the iPhone-dock was a nice feature.
We could not hesitate to book this apartment again - if Maria will have us :-)