Adryan is no longer in the picture. The landlord is Ayhan, and he is VERY friendly and pleasant and accommodating, as is his assistant, Lucy. The apartment is most conveniently located as regards the many great museums. You do need to know that there is no oven in the apartment, probably no hardship for a short stay, but for close to 3 months, a bit of a minus. My only other problem was the exhaust fumes from the traffic on Gartenstrasse. Probably no problem in winter with closed windows, but after a hot summer's day, when the evening cools off and you gasp for some fresh air, and if the wind blows in the wrong direction, that can be unpleasant.
Otherwise the apartment is comfortable, and the bed is terrific! Also the good water pressure in the shower and the very quickly available hot water. And the building is very quiet - I hardly ever so much as noticed that there were other people near or above me, and the few I ran into on the stairs were also very friendly and pleasant.