We stayed with Susan for 3 nights. The communication with Susan was good and we kept in touch to arrange the check-in. I had some trouble with the check-in to locate the flat (Google maps leads to the wrong location) and struggled to use the keysafe in the dark.
The place was very clean and looked just like on the photos. Susan kindly let us use her kitchen. The bed barely fit the two of us, was creaky and the mattress was not very comfortable.
The location of the flat is great, the S-Bahn Station was only a 5 minute walk away and it was quick to get into the centre of Munich. If you want to get out into nature then the S-Bahn also conveniently stops at some good locations for a hike.