Steven and Stephany Miller are absolutely very nice and they answered at all our questions.
The apartment was exactly like the description on Airbnb : very confortable, well equipped, perfect place to visit Washington (15 minutes walking to the metro Eastern market and 15 minutes walking to the Capitol).
Lovely neighbourhood surrounded by green spaces. You can find a supermarket (Safeway) at 10 minutes walking also.
If we come back to Washington, we will go at Stephanie and Steven's place.