Karim's place was indeed cozy but very comfortable. Our twins (13 year olds) were able to sleep comfortably in the loft. The location of the flat is excellent...very close to all the major sightseeing areas. Subway and bus stop is literally a minute walk from the flat. We used the washer inside the apartment every day during our stay. And Karim provided tokens to use the dryer in the basement. Though we didnt meet Karim, he was available and very kind on the phone to answer any question. He had very good recommendations. Highly recommend this place!
PS: Muffin Man restaurant next to the flat is excellent for breakfast!