We parked for free on street right in front
After my visit I discovered that the meters on the street are free from 5 pm to 8 am. Looks like the park across the street prohibits parking from 3 am to 5 am. The meters on the same side of the street are two hours max between 8-5. If you're going to stay between 8 am and noon, park at a meter across the street, that has a 4 hour max. Parking is $1/hour. I just parked overnight, then at 8 am logged in to the parking app and paid for 4 hours. Much cheaper than $24 in the hotel garage.
Free parking is hard to find in GR. We valet parked for somewhere around $30.
There's a park across the street that appears to be free.
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