It is well hidden in an atrium and seems to be connected to an art gallery. The place is rather small and seems to close early. The waitress was very friendly and the owner (?) of the place engaged us in a rather amusing and definitely interesting discussion about Austria, Vienna and their royals and politicians.
The tea was definitely good, comes in colorful mugs and is also served with honey. Their selection seems to be big and the glass of water that comes with the tea is huge, compared to other cafes.
Going there is an experience. I swear.

Very small, very cosy, very private.

Their current menu can be viewed on their homepage (as well as their simulations) and it is either possible to order a single dish or the whole goodness. A non-vegetarian version is always offered.

Since they have a butcher in their team the sausages are handmade, fresh and made with as much love as a butcher can offer.

And to top it all - they're very kids- and family-friendly.