This question came up on the DynamoBIM forums recently.
https://dynamobim.org/forums/topic/a-family-with-3d-text-to-acquire-room-information/
Thankfully our friend Dynamo is here to help!
First we collect the rooms and figure out the center of them. Then we place a generic model as a 3d room tag. Lastly, we assign the values from the rooms.
See the video below of this in action.
*Edit- Received some question as to where the room tag family is.
It's in the package folder. Simply copy the link below into windows explorer and you will see the family .
C:\Users\%CURRENTUSER\AppData\Roaming\Dynamo\0.9\packages\Rhythm\extra
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