There are times when I have to provide access to my apartment so repairs can be carried out or certain other things done such as inspections. For example, the ceiling space can only be accessed through manholes in my apartment and one other. I don’t have a problem with that, it’s my building together with the other owners.
If access through your apartment is the cheapest and safest option, then surely it is in your interests as an owner to go with that option. You do want the crack fixed don’t you?