This is a great place to stay if you want to explore Washington, DC for a couple of days. We stayed for a week and took the Red Line from Brookland station every day. It's a bit of a walk because it goes uphill first, but as the other reviews suggest it is between 15 to 20 minutes, so no big deal. We certainly didn't mind it. The neighborhood is quiet and safe, and there is a street with a couple of shops and restaurants in walking distance. One night we missed the final metro train and discovered that there is a bus line running from the Dupont Circle area to Brookland - it was quite ideal!
If you were to stay with more than two people, then it's perhaps good to know that the two rooms are properly separate: you enter the apartment through the first and the bathroom through the second. But because the beds are at opposite ends of the apartment, it gives you a lot of privacy.
We never met Jen in person, but communication through the app (chat) was exceptional: quick and helpful responses throughout our stay. The one time we had a problem, Jen took care of it so well and so quickly, that from the time we send our first message to the time my phone next had reception, she had already solved it all.