We had a wonderful time in Vienna staying at Caroline & Martin's 19th century masterpiece. It is a beautiful, clean, spacious apartment with all the amenities of home. The bathroom even has heated floors! The furniture and bed are comfortable, particularly after full days of sightseeing. As others have stated, the location is quite convenient, close to both bus and tram.The U-bahn is about a 10 minute walk. Caroline & Martin were accessible, even dropping off a printer in the late evening for our use. The Vienna guide they sent us was comprehensive and incredibly helpful in our trip planning.