I had a very good stay here. The space is stylish and comfortable, and the hosts were very responsive, even coming out to help me when I struggled to work the TV.
I stayed in February, and the apartment was cold when I arrived, but I figured out how to adjust the thermostat and after that it was quite warm. That said, there are no curtains (just thin blinds) and with the exception of the bathroom, all internal doors have been removed (even between the bedroom and back door, and between the bedroom and living space) - which means very little privacy, but also a permanent draught from the windows and external doors. There aren't any provided blankets either - bear in mind if you are visiting in cold weather!
The kitchen is well-furnished but not very well-equipped (you can tell it's not someone's permanent home) - for example, no colander, baking sheets or cheese grater. The bedroom and bathroom are great and well-equipped; I also found the washing machine and dryer handy.
The location is very good if you are visiting Adams-Morgan or the Zoo area, and is about 10-15 mins walk from the subway and barely 5 mins from a supermarket. I'd stay here again - but perhaps in warmer weather!