Really excellent and cosy place in a lovely and unexpectable area of Berlin (Villen Kolonie - Lichterfelde west) with peaceful and quiet streets lined with outstandings houses, gardens, high trees... One feels really like in the countryside! But, obviously, it's a bit far from the proper city center if you like being in the heart of cities.
We didn't meet the owners in person ; you check in and check out taking the keys in a safe using a code they send you a few days before your arrival.
The sauna is an amazing plus for those who are fond of that...