It's not an apartment or hotel. It's BELVEDERE CONDOMINIUM ASSOCIATION.

Still in good condition and still occupied to this day.

Security is tight.

http://www.belvedereslc.com/home.html

and the building to the north used to house city library then a planetarium and it is being restored to first glory, to be occupied by the O. C. Tanner Company.

You can contact the management direct through above link.