I would definitely recommend Melissa's condo, especially if you're looking for a "real" Washington DC experience. We traveled to DC for a family vacation. The condo is not very far from the monuments, etc. Parking was super easy. We never had an issue finding a place to park. You do have to adhere to the on-street parking rules, but they were easy to understand and follow. When we had questions, we simply asked people on the street and they were always very helpful. Just to ensure we weren't in violation of the rules, we simply chose to park on a street that allowed parking at all times with no restrictions. We never had trouble finding parking on that street.
If you're looking for a great local seafood restaurant, we tried Capitol Hill Crab Cakes in Anacostia. We found a Groupon (https://www.groupon.com/deals/capitol-hill-crab-cakes-1) and the food was very good.
Melissa was a wonderful hostess. The refrigerator was stocked and there were nice snacks waiting for us when we arrived. There was also a Keurig machine, which I loved. She even provided SmarTrip cards for us for the Metro which may seem minor, but it was nice touch (not to mention a savings of $2 per card). Melissa checked in on us once or twice to make sure we had everything we needed.
The condo was very clean and the tenants were friendly, but pretty much kept to themselves.
I would highly recommend Melissa's condo. It is an excellent value and we were able to experience Washington DC's National Mall area as tourists while feeling like we were also able to experience authentic DC living.