We were delighted with our stay at Pension Riede. The hotel is a ten minute walk from Schonbrunn, and there's a Ubahn station across the street that can have you downtown in a few minutes. The room was very large, very comfortable, and immaculate: high ceilings, wonderful bed, beautiful bathroom. Breakfast was just superb, as were our hosts. They were able to arrange secure parking for us nearby, so we were able to park the car & then just forget about it for our entire stay. I wouldn't stay anywhere else in Vienna-- just superb.