Nothing but great things to say about our stay and the apartment. The location is excellent for seeing Vienna. Very close to everything including the U2 subway station and a short walk to the Museum Quarter. A grocery store 2 blocks away and more restaurants than you can count within a 5-minute walk. Never had a bad meal the 8 days we were in Vienna! For being so convenient and adjacent to the Rathaus the apartment was still in a quiet neighborhood.
The apartment itself was open, airy with great sunlight streaming in each day. It was quite spacious for the 5 of us and could easily fit 6 adults comfortably. The beds and chairs and couches were quite comfortable. and the outdoor deck/ patio was a nice feature. We only used the kitchen for breakfast but it had all the pots and pans you would need to cook a full meal. There were plenty of glasses, plates, and utensils. The refrigerator was full size. There is a large table with chairs in the open dining area that easily could fit 6 adults. The apartment was on the top floor so the elevator was essential. We all walked up once and that was enough for any of us. It was a tight fit for 5 adults so we would often split up into two groups when we rode it.
We couldn't be more pleased with our stay at Constantin's place and would highly recommend it to everyone.