Around 600mts from Vienna central station 10-15min walk. Metro station line U1 is just outside the building. Excellent location. Mem guided us on nearby things that can be done by walking. House is on second floor without elevators so we had to carry our luggage. While checking us in Mem did help to carry one bag and that was so nice of her.
Apartment is well equipped and we found it very clean. Some toiletries were missing which we had to manage ourselves.