Tyson's Glen is a great place surrounded with terrible tenants.
The noise level here is by far the most atrocious, horrible, awful experience at any apartment complex I've ever seen. That's the primary reason why I will never rent from another AJ community in the DC area. When moving in, I raised the noise level concerns from these reviews, and the staff responded that it was a "reasonable concern" but that most tenants only had issues once a week with noise levels. I've heard my neighbor's dog, drums, and TV every single night since I've moved in. Every other footstep is a slam. Some night's, it's impossible to get any sleep.
If it wasn't for the noise, it might be possible to live here, but as far as my experience goes I would never suggest it to anyone. I'm considering terminating my lease and paying to get out of here sooner.
As far as maintenance goes: I've had a ton of problems since I've moved in (lighting, walls, electrical outages, appliances) but almost all of them have been fixed very quickly, so kudos to the team.
Parking at nights heavily depends on your local area. George C Marshall is harder to find spots. The back-side of Mohegan is usually fairly open, but if you have a lot of units near you, the worse it gets. I have had very little issue with parking since I've moved in, but can sympathize with those on the further side of both streets.
My best suggestion to anyone moving in would be to find a top-level corner unit. If you have anyone above your unit, realize that you are willing to risk never having a good night's sleep for the rest of your lease. It's absolutely not worth it. I would suggest NEVER taking a basement unit at this complex.