Lots of pros with this place, some cons. The location is really great for exploring the Hill, the Capitol, the Mall, etc. There are parks nearby, groceries, pharmacy, restaurants - so much that is walkable!
The parking pass process is a little finicky because the DC website is janky (make sure you put the right dates in the first time!!), but not the host's fault. It ended up working out. I highly recommend printing the pass either beforehand or at the FedEx Print nearby (eg, if you don't know the license plate due to rental).
Loved the water filter pitcher in the fridge, and there is an adequate kitchen area if you want to use that or warm stuff up.
The bed was fairly good - a little on the soft side. The AC unit worked fine for us.
The bathroom is super small and poorly designed but it did the trick - plenty of hot water. The couch is not comfortable. There really is no outdoor space, but you will be eaten up with bugs anyway.
The worst thing about the place was the hot water heater, which is unfortunately in the bedroom closet. My husband described it as sounding like a "blender" every time it comes on, and if the neighbors upstairs take a late shower or use hot water late at night (which happened nightly), the hot water heater will wake you up (startle you in fact). So...
I would say, overall, we didn't like that this place is mass managed (you don't get the sweet feel of a local host), and there were other annoyances, so I think it's overpriced. BUT the location is great - really great. So if that's what you really care about, go for it. You'll be fine.