I was fairly happy with the place, except that one of your customers who didn't have the codes & didn't know how to get in, and didn't get any response from your phone and was freezing outside.
In his desperation, he kept banging hard on the outside door past midnight and forced me to eventually get up and try to save his situation.
The lack of phone response being the problem.
I think by default, they should text the various entry codes 2 hours before earliest check-in time, to the registerred customer mobile.