Mostly as advertised. He did Some redecorating with a table instead and 1 couch instead of 2. All was fine for me, i was away mostly, everything was relatively close by (30 minutes walk, 15 minutes walk and metro to Smithsonian air and space).
Dennis is very responsive, has great tips, but you have to ask. Neighborhood was safe, might look dodgy, but i think that's just my european look onto things. For me it was fine, would recommend for anyone who wants to see the sights and just eat and sleep after.