This is the 1780th most frequent Catalan word.
cadascuna
"Each one."
Refers to 'each individual entity of a group', in this case, the rooms.
Cadascuna de les habitacions té una vista magnífica.
Each of the rooms has a magnificent view.
Used to specify 'individual attention or action for each item in a collection or list', such as tasks.
Vaig dedicar temps a cadascuna de les tasques que m'havien assignat.
I dedicated time to each of the tasks that I had been assigned.
Serves to emphasize 'the separate and unique qualities of each entity within a group', here the ideas.