We we're two couples travelling with one small child, and the appartment was perfect for that. It located well just across from the beautiful Viktoriapark, where we walked several times. It's easy to get from the appartment to the central of the city with the U-bahn - takes approx 15 minutes.
Martin, and his son, we're really nice to us, and helped us when we needed it within 10 minutes. The communication with Martin was really easy.
Thank you for a great stay!