If going to plug route, get it as a NEMA 14-50. Handles up to 60amps and is the long-term standard. It's already the plug used for "shore power" from RV parks, which EVSEs are defaulting to.

My original proposal for my apartment charger was to have a plug. As my parking spot is outside (no garage), the electrician was against having an outdoor plug. I honestly had to agree with them. Hardwire install was negligible for the costs of the install (to the landlord). If you're in a garage, then this security factor is not an issue.

If you do make a pitch to the landlord, make sure to mention IRS 8911, which got an extension to the end of this year. 30% off the costs is nothing to sneeze at.