Ewald is a very caring host and made sure the guests feel comfortable and be in contact at all times in case some additional need came up during the stay. The view of the appartment is marvelous on a sunny day, exactly as described, and even though it looks like a carte-postal it is 100% real! The appartment was as in the pictures, even a bit bigger than I expected. We had access to a supermarket right below the building so despite the appartment being on the donauinsel, it was not isolated from covering basic needs. The park below is perfect to relax and the centre is 10´ away with the U1.
All in all I would recommend Ewald as a host, because despite being occasionally busy with work he makes sure he is available for assistance to his guests at all times.