Mark's apartment is extremely well located. 5 minutes of leisurely walking will get you to the edge of the lake. All within one city block is a well tram stop, a Coop, an Aldi, and multiple smaller shops and restaurants. The tram is one stop away from the central station from where all the connections radiate out. The tram line that serves the station connects directly to the UN offices.
The room you get is very quiet and has enough space to keep your luggage. Their entire apartment is extremely clean. The kitchen is well equipped and you will be able to prepare a fast meal quickly.
Mark and Deborah were away when I was staying but their two cats were also great hosts. They are calm and very well mannered. Mark and Deborah have a regular cleaner who comes by every day so there was no worry about caring for the cats other than to give them lots of pets if you were so inclined. Mark was extremely timely with his communications and had an extensive list of recommendations.