I live in a Condo low level building and I cannot take them into the elevators so I have no choice. It is reasonably safe with secure access, but I have a U Lock, Chain and Cable ! Insured for replacement value, so that's all I can do I guess......
Purchased two Trek bikes for me and my wife. At this point just doing circuits of the underground parking, but plan to do lots Spring, Summer and Fall.
Also got an eBike rack so we will do some overnight trips we hope
Here they are installed on the bike rack I had made