Loved this little hotel :)
Depends on what day of the week you are there. Prices fluctuate a lot. Best to call them with your dates needed.
Tax is 10.5% on room charge, I believe.
Not outrageous, no "resort" fees or the like. It was about $30 per night on a $125/nt rental. No hidden add-ons, the taxes are the extra beyond CI's control. Quaint, clean and five minutes to Harbor shops, downtown, etc. Good location. Will go back. Not the Ritz, just clean and convenient.
Get an answer from Comfort Inn Monterey by the Sea staff and past guests.