is car parking free for hotel guests?

No. There are lots a block or so away or there is a valet in the lobby. You pay the valet separate. They won't add to room charges.

Was there in November 2017, the valet parking was $27 per day

It is not. Parking meters.

Don't know if its the same price now since I went. My wife & I had to pay $20 each night for them to park my vehicle in a garage they have down the corner.

Sadly all of the answers are correct. My suggestion is valet if youre going to be there for more than just a short visit.

No free parking. Have to pay streetside parking.