Also, e.g. Amazon has options for me to specify to delivery person where to drop off packages: front door, building reception, mailroom or property staff, "no preference".

Which of these should I select, if any?

Hi Monico
For Information on how to send mail and packages to your student residence, including addresses and how to address your mail can be found here follow this link:
https://www.reslife.txst.edu/residents/mail.html
also
U.S. Mail is delivered to each residence hall or apartment Monday through Saturday. Deliveries such as UPS or FedEx are accepted—check with your hall front desk for daily package pick-up hours and locations. Non-mail deliveries (with the exception of flowers) are not accepted.