We stayed with my boyfriend during a week in June 2015 at Robert's basement apartment. The location was perfect, in Georgetown, but the apartment was not clean at all.
Good points: the location in a lovely and quiet neighborhood, close to restaurants and shops. Not that far from metro stations, but still some walking time (ten, fifteen minutes). The apartment has all utilities: air conditioning, wifi, fridge, oven, cooking pans and plates, wash and dry machine and even detergent.
Bad points: the cleanliness especially on the floor and in the bedroom, we had to run the vacuum for twenty minutes when arriving. There was a smell of dust and old stuff in the whole apartment. We were very disappointed and sent a message to Robert, as cleaning fees were charged, he didn't reply.
The basement is very dark, practically no window, you almost can't know the weather outside. The AC is very noisy and you can not control it as it works for the whole house. The TV receptor was not working and the WiFi was quite slow.
In conclusion, we could recommend it only if great general cleaning is made before receiving new guests.