danygirl said:Don't rent a car unless you used to crazy city driving. Parking in the city can run $20 per day and parking at metro is not free.
The doubletree in Bethesda is near metro why not stay there an extra day or two and then ask the family if you can stay the rest of the time with them .
There is metro in Springfield but honestly you won't find a hotel within walking distance. During the week your uncle could drop you at the pentagon city metro and pick you up in the evening at Springfield metro
Springfield is a big place. If you give me a street I can be more helpful - lived there for a long time and still live nearby
Once you are in DC there are a ton of free things to do. Check travelzoo and goldstar for discounts
Depending on time if year a Nats came can be fun and cheap
There are a ton of places to shop and eat in Bethesda for your time there. NIH is on the bus line and metro is close. You can get into the city pretty quickly from there
You should have a great trip!
I wonder if there might be hotels *somewhere* along that line? We don't necessarily have to stay in Springfield if we can get there easily from a stop or two away. They live near 495 and 95/395? I don't know the area at all, so I'm just looking at google maps. South of 495, west of 95