We stayed at Carina's for three nights during our trip to Vienna. The apartment was very clean and well maintained. We even got complementary coffee capsules for the coffee machine and some chocolates. The location is great. Few hundred meters to the u3 line which also happens to be the best line for tourists. Carina showed us around the apartment on the day we arrived and was always easy to contact. She was extremely helpful giving us directions to local restaurants etc. and we thoroughly enjoyed our time in Vienna.