Overall I had a great experience and would stay here again! Barbara is very friendly and has a beautiful home. The bed was amazingly comfortable, my room had a giant flatscreen with Netflix, Hulu, etc. She's got central air in the house, but there was also a fan in the room (great touch! I can't sleep without some white noise.). I didn't eat at home at all, but her kitchen looked straight out of a magazine!!
There's not a whole lot to do in the direct area, and I was told by colleagues that work in DC it isn't the safest neighborhood. Coming from NYC I didn't have a problem, but still wouldn't recommend walking alone at night. It's only a 10 minute walk to the Green line mostly along a busy street. If you're not a public transport lover, a Lyft from Chinatown was less than $15.
I'm a quiet person who tends to keep to myself, and felt totally comfortable in this space. She's happy to talk in passing if you'd like, but won't bug you. I recommend you go ahead and just book it!