Sean's place was absolutely perfect for our stay! The neighborhood felt very safe for walking and there was a convenience store just a block away.
The bed was super comfortable and supportive, on the firmer side despite being memory foam. This was an unexpected but excellent perk for someone with lower back issues. However, outside light from the backyard came through the glass door in the bedroom, such that I would suggest using a sleep mask for the most restful sleep.
The thermostat was very easy to adjust. The shower was the most luxurious aspect of the apartment, with an overhead spray, three wall sprays and a handheld attachment. At 5' 2", the side sprays were perfect to avoid getting my hairstyle wet :)
Be aware that there are a few smart home devices (one in bedroom ceiling, and one by the entrance) in the space.
Overall, I would highly recommend Sean's place and would definitely return next time I visit DC.