I had a great stay at Ross's place. The space is so well equipped and accessible and Ross was an incredible host - very proactive, considerate, and responsive to any needs or questions. The bed is super comfortable and the morning coffee is a great touch as are the available hot and cold cereals, yogurt, and milk.
The apartment is quite convenient as well and about a 10 minute walk from the Columbia Heights metro and the U Street corridor with lots of restaurants.
With regards to accessibility, this space is up and down a few steep stairs so wouldn't be ideal for those with limited mobility. As other reviewers noted, you can hear noise from upstairs with dogs running and playing but I didn't find it bothersome at all and didn't hear anything before 7/7:30. If you're looking to sleep in however, this might not be the place for you :)
Overall an impeccable stay - can't recommend Ross and his place enough!