numberOfFullBathrooms

This term is proposed for full integration into Schema.org, pending implementation feedback and adoption from applications and websites.

Thing > Property > numberOfFullBathrooms

Number of full bathrooms - The total number of full and ¾ bathrooms in an Accommodation. This corresponds to the BathroomsFull field in RESO.
Values expected to be one of these types
Number
Used on these types
Accommodation

Source

https://github.com/schemaorg/schemaorg/issues/2373