Benno and Jasper are very friendly hosts with a brilliant apartment close to a tram stop and just 70 yards down the road is a Lidl (great for early morning recovery). It's very simple to get to via train. The center of Amsterdam is just a 20-30 minute tram/bus; alternatively, Uber is very popular and fairly cheap during the week.
Overall a lovely place and would definitely look to come here again if visiting in a group of 4 =)
The piano could do with a little tune up, though =P