I spent one weekend in Marga's guesthouse.
It is just one room, but very nice decorated, well furnished and really cozy.
During my stay it was snowy and quite cold in Amsterdam and I really appreciated the fireplace which made it comfortably warm.
The shared bathroom is located just a few steps on the house boat where Marga and her family live.
The next tram / Metro station approx. 2 km away. But by bike (which can be rented) it is not a problem at all.
I really enjoyed my stay there and would particularly thank Marga for her lovely service picking me up and dropping me off at the tram station!