Christoph was an exceptional host! His English is excellent which was extremely valuable to my husband and I since we don't speak German. Christoph communicated with us in a very professional and prompt manner. He met us and provided access to the flat at the arranged time and location. Helped us store our bikes and showed us around the city. He accommodated our request for an ability to make coffee in the morning with a kettle and a coffee pot. The flat is very nice and in a great location for exploring Vienna. Would highly recommend this locations for others. My husband and I, ages 54 and 60, could not have selected a better place to stay in Vienna!