My boyfriend and I stayed here for the memorial day weekend. Helen's listing was clean, spacious and looked much better in person than the pictures. The parking was very compact but fit our Prius. There's also a lot of available and safe street parking. Helen's place is 15 to 20 minutes away from the Smithsonian and a bunch of fun plazas and restaurants.
I just want to add the showerhead in Helen's listing is fantastic! Hands down my favorite part of the stay. Helen was also very communicative, answering my questions within the hour. I'm definitely staying here the next time I'm in DC!