Jorg's house is spacious and clean, comfortable for 3 pax. The bed is soft with thick comforters which are great for winter. Jorg and Sara were hospitable hosts who were patient to explain all amenities and they responded promptly to any calls for assistance. TV in room provides Netflix as well, which makes staying-in very tempting.
One thing to note will be the walk to the house can be a little dark, therefore, flashlight (can be from phone) is advised, especially during winters when the nights get darker earlier.
The location is relatively convenient, about a 7-minute walk to Nollendofplatz, which is a few stops (less than 10 min) from Portsdamer Platz which is one of the main interchanges around Berlin. The food stores around the areas open till late, which makes the place even more convenient. There is a supermarket (Edeka) near the S-Bahn, which opens till 8pm during winters. Lastly, there is a thai restaurant (Mutter), right at the building, which serves good Thai food until 2am.
Highly recommended for travellers to Germany Berlin!