My friend and I enjoyed staying at Sanders property in Nyhavn. We loved being in the Center of Copenhagen with no noise, it is a very quiet apartment.
The flat is on the top floor so you get the light coming in beautifully in the morning ( if there is any). The flat is a bit tired looking in places but easily fixed issues, such as a coat of paint is required in the bathroom and other small adjustments. Sanders are very responsive hosts and I would come back. Great restaurants and cafees nearby and Magasin off course.