Location, location, location! Super safe neighborhood for families. Theres a laundromat in walking distances (they will wash and fold too). Kitchen has basics for a family: hot plate, toaster oven (big enough to heat up a full size quiche), microwave and full size fridge. The carriage house is small but you wont notice it if you are out and about in DC.
House was very clean but I'm sensitve to allergies and was congested my first night. Allergy meds did the trick.