I left my car at Amerisuites (17th ave) for 20 nights while cruising. Not a problem at all. Would do it again. However, if you don't need the hotel the night before, I found an off port parking facility that charged only $5 per day. Don't remember name but you can find it through www.longtermparking.com.
"Carpe diem quam minimum credula postero"
Seven Seas Explorer - Miami - Venice - Mar 2017
Silverseas Explorer - Arctic - Aug 2017
Seven Seas Voyager - Rome to Beijing - Oct 2017
Seven Seas Mariner - Lima to Buenos Aires - Jan 2018
Silverseas Explorer - Siberia - Jul 2018
Seven Seas Mariner - Australia Circumnavigation - Dec 2018