The location of this apartment is perfectly convenient. The free H Street streetcar takes you quickly to Union Station, where you can begin any form of sightseeing you want. As others have noted, Whole Foods and a CVS are less than a block away, and the area has plenty of restaurants, etc.
This was my first time staying in an AirBnB that is operated by a long-distance management company rather than a real owner-host, and that created the expected minor problems. Alex, our contact, is located in Los Angeles, and she was very responsive, but she could not always manage to get the on-site staff to execute. For example, although I had requested linens for the sofa-futon in the living room before our trip, and requested them again once we discovered there weren't any, our first night, housekeeping never provided them, even after an additional request.
Our requests for linens and extra towels were met with slight skepticism -- asking us to double-check places we'd already checked for them. Our request to replace burnt-out lightbulbs in the master bath and kitchen was handled promptly, but included a request that we photograph the burnt-out light.
These are very minor issues and do not outweigh the positives of the location, cleanliness, sunlit rooms, and contempory decor. The apartment is sparsely furnished and definitely needs a comfortable chair or two, but in super-pricey DC, it is a good place for the money, and I am happy to recommend it.