Mark and Sebastian were amazing hosts. They were very quick to respond and offered some great suggestions. Their friend Marja actually let us into the apartment and she was lovely as well.
The location is amazing. It's quiet, but a quick walk right into the heart of Amsterdam. It's also very easy to get to from the Centraal train station. They will likely have wine and beer waiting for you when you arrive. There was also plenty of coffee and Tea. The bed was comfortable and all the amenities are nice.
I hope to stay here again sometime soon!