OK, so the good things - great hosts, really clean and warm accommodation. Great shower and all amenities are new and top of the range. Good internet and amazing TV (though I missed not being able to get the ordinary news!!!). Close to lots of restaurants and a supermarket. Even though it is not in the centre of Washington it is very easy to get to the centre via the nearby metro.
More challenging things for me...though they may not be for others, included - the noise spill from upstairs and the noise from the heating system, which is in the bedroom. The later obviously wont be a problem in the summer time, but I stayed in February and the noise through the night meant I couldn't sleep in the bedroom. The apartment is smaller than I thought and while the ceilings are low, my 6'3" son managed fine.