You won't need to pay the meter on Sundays, but street parking is hard to find in the museum neighborhood. There's a garage a block away that charges $15 on weekends if you're not lucky enough to find a spot on the street.
We found metered parking on I street near a school, which is of course closed on the weekends. Its about a 10 minute walk
I took metro, easier
No bad
Extremely difficult. Be prepared to park in a nearby garage for $15.
Very hard. We went at 1:30 on a Sunday and ended up in a parking garage. The meters don't require payments on Sundays so everyone is trying to park free!
It's going to be difficult in that area any day of the week but it's not impossible just give yourself time
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