Definitely recommend this place for a short stay in Vienna :)
Its location couldn't be better (3min walk to Belvedere Castle and 10min walk to Vienna Main Station)
Also public transport ist also close by with the line 'D' being just 3min away, which easily gets you to the most important tourist attractions.
The kitchen is very small (No microwave, No oven) so I would recommend eating out.
The owner was very friendly and quick to respond.
Would book this place again in the future :)