Marfi was an excellent host. She lives upstairs and was able to greet us right away when we arrived and let us leave the keys in the apartment and store our bags in the hall during the afternoon since we had a late train out.
The listing was very accurate, plenty of sunlight, beds and seating areas. The only difficulty we had was with the shower- you had to hold the handheld shower head because hooking it up on the wall made it point into the wall, not the shower. It made it a bit difficult to shower one handed, but the pressure was good and there was no problem with hot water.
The neighborhood was good, less touristy than further in the city center, which we liked. There weren't too many late-night restaurants in the immediate vicinity, but it was only a 15-20 minute walk to the red light district, and even closer via tram.
All in all, I'd definitely recommend, and would stay here again if we're back in Amsterdam.