Does anyone know how to reserve these rooms? I’m not sure about the official process at this facility, thanks
Is this the monastery you are looking for?
https://csse-roma.com/en/rome/
It looks like you need to email them to reserve your room. You can also book through https://www.monasterystays.com/?d=Italy/Lazio/Rome/Repubblica/LAR136-accommodation
Last year I stayed at monasteries in Florence and Rome and booked direct for better prices and terms than using Monasterystays.com. In Rome I recommend https://www.romacasaperferie.it/