Nope, they are not allowed in any student residences.
The singles in North Hall are about 100 sqft big. There are 2 bathrooms in each floor, so about 10 people would be sharing 2 bathrooms. You can find more info about North Hall here: https://sll.rpi.edu/buildings/north-hall
Yes, as long as you can find a place to put it. You are free to have monitors and TVs in the room.
Yes there will be RA’s and RD’s, and monthly inspections.
Yes they are.
All Freshman would have to go to Commons to get their mails and packages. There is one small mail box for each dorm room and you will receive the keycode with your dorm keys. Packages are arranged to be picked up on the first floor of Commons, where you would present your student ID to the staffs and they will bring out you packages.
There’s no A/C in Nason. However, there is heating for the winter season but using an additional heater is not allowed in any dorms at RPI.