Jonathan and Kimi's flat is minimalistic and very clean and tidy. Moreover the interior decoration and choice of materials and furniture is done with style and taste. There are windows on both sides of the flat, so the morning light fills the space.
Heating is electric and the radiators can be setup individually.
The additional third bed is actually an extending armchair that offers satisfactory comfort for a child, but is not really comfortable for a back-aching grow up. :) The main double bed is great and wide enough for couples.
In the kitchen you have all the basics, so one can prepare moderately complex meals (2 electric stove burners, no oven). The kitchen stools are high and one eats on a nice wooden counter.
Bathroom is super clean and separated from the toilette.
The only thing I was missing was a place to sit, relax and chill. There is no sofa and no TV (which might be good). There is one armchair, which does not suffice for 3 people. Therefore, the flat is very well tailored for business people and short/stay visitors.
All in all, I give it a 5-star recommendation to Vienna visitors.