I am too excited for words. My sister and I are shooting down from Upstate New York to DC for the 12/21 Eagles game for my birthday!!

[insert pure joy here]. I was born in MD.... well...quite a while ago. Neither of us have been there in about 15 yrs. We know nothing about Landover anymore. Thats why I desperately need your help!!
Luckily, we at least have our tickets LOL! We need a decent (and safe) hotel and information about parking. I am just wondering if popular opinion would be that we should get a hotel out of the area - if the local hotels are not the best. (All of the reviews I am finding for the hotels in the vicinity are kind of scarey - dirty rooms and unsafe parking lots.) We would consider southern Pennsylvania hotels as we pass through.
In regards to parking, we are not afraid to walk.... two miles wouldn't be a problem- as long as it is relatively safe. I hear alot about the parking passes, but, I can't seem to find anyone selling them individually. I would not know what one looked like anyway. They could send me a Uno card and I would be clueless.
So thats the issue, any info on parking and hotels..... or super secret awesome hotels within walking distance - would be greatly appreciated! (A girl can dream can't she??)
Thanks, for your time!
44ADG