Bernhard apartment is fantastically located for a visit to Vienna. As mentioned by previous reviewers the location is walking distance to most things worth seeing and the area has restaurants and a couple of supermarkets around the block.
The only issue we had was having to leave the windows open at night as there is no air con or fans to cool things down. This made for a noisy early morning wake up. With the windows closed you cant hear anything but because we had several days over 30 degrees we needed the air flow.
It’s a great apartment and outside of summer I would be more than happy to return.