My wife and I stayed at Esser's cozy apartment for a few nights in Copenhagen and really enjoyed it. The apartment is lovely and authentic. It was very clean when we arrived. We checked in by picking up the keys from the grocery store down the street - a very seamless process.
The apartment is situated on a quiet side part of town, several stories above the street so we found it to be very peaceful. It's just steps away from the gorgeous canals and canal boats.
The aforementioned grocery was handy for picking food, beer, wine, ect. It is a very short walk to some great food including the Copenhagen Street Food Market and a great cafe called Parterre. It is easy to walk to other neighborhoods like to see boats and restaurants in Nyhavn, the amusement park and Ny Carlsberg Glyptotek in Tivolis, and shopping in Strøget.
Esser was a fantastic host. Communication was easy and straightforward. I would highly recommend staying here and hope to return one day!