DO NOT park in Metropolis lots unless you like being ripped off
Clippership Public Parking in East Boston (run by Metropolis.io) charged me --- $380 --- for one overnight stay. They also tacked on an extra service fee, despite the website for this location clearly stating that "Rates include service fees".
Conveniently, they don't tell you in their signage, on their website, or app, that they will charge you the full day rate for any amount of time. Park for 30 minutes? You'll pay the maximum for that time period.
I've been stuck in an email thread with Metropolis customer support for almost a week now. According to their rep, Clippership charged me for FIVE full 6-hour periods in a 20-hour timeframe, which they think is perfectly OK.
Seriously, park anywhere else.