I enjoyed my stay at Julie's place: it was clean and as described. I liked the rules (no shoes inside, for example) and appreciated a concerned host specifying guest usage. The kitchen was well-equipped. My room was nice with a comfortable worktable and chair and offering a delightful view of the capitol (seen through the tree branches). The WiFi was good and consistently had download speeds > 20 Mbps. Julie & Jason's communication was always excellent and timely.
The townhouse is on a rather steep slope: so if you're a more senior AirBnB traveler, you might find the climb tiring at the end of a long day.
Re neighborhood: I do not agree with the assessment of other reviewers. I liked the neighborhood. I found it to be a nice mid-middle class neighborhood, relatively clean, passers-by frequently greeting me and talking with me at bus stops. On warm days people come out at night and talk on their front porches, so it can be loud until midnight, but that just means it is a community. I felt safe walking to/from mass transit including up to Anacostia Metro Station. Bus service is excellent: I had a variety of routes to choose from and could easily go to/return from the capitol area. Grocery stores, however, are scarce; There's a Safeway towards the end of a bus line. But I tended to use the Trader Joes in Eastern Market, since it was close to the capitol and I could easily get a bus back. I did find the area around the #92 bus stop at at 16th & Good Hope to be sketchy. I easily avoided it, however, by getting off at 15th. Note that 16th & Good Hope is NOT in the neighborhood of the townhouse, but sometimes Google Maps would recommend the stop. Buses with stops closer by with no issues are: W6/W8, B2/V2, Union Station Circulator, 90.
A final note: you potentially are sharing the place with one maybe two other AirBnB guests; having a house guide outlining common area usage, rules, and suggestions would be a helpful improvement.
Overall: a great place to stay when visiting DC; I would definitely stay again when visiting Washington DC.