Ujale's place is simply perfect. First of all it is mega centered, close to evrything (curiosities, monuments, cafés, shops, restaurants, metro, train station...), this is really convenient.
The flat has a lot of charm, is well decorated and super clean. We stayed in December and the heating works well ! And last but not least, Ujale is a wonderful host, friendly and welcoming, giving tips on his city. We will certainly come back to Kurrentgasse 4 during a next trip to Wien !