If I am remembering correctly, it was about 7'x10'. I will check my records and if it is different, I will post it here. Thanks so much for your comment!

Hi! Beautiful room! We are doing our master bath very similar. How much space did you allow for the toilet area?

Also, where is the door located?

I always allow a minimum of 32" wide for the toilet. In this case, we recovered some space from a closet to recess the toilet a bit deeper into its alcove. The total depth of the space the toilet is sitting in is about 31", increased from about 14". Before the toilet really stuck out into the room. The floor space has a much better feel with the toilet recessed more fully into its own space.
In the picture above, the camera is situated in the door, actually in the hallway outside the door. We had to remove the door from the hinges to take an effective picture, otherwise we would have seen the door in the left side of the photo.
In the 3 following pictures, you can see the "before" condition, an image of the tearout that gives a sense for how much space was recovered, and another view of the "after" result. I am not sure which order they will come up in, but I think it will be obvious. Thanks for your question!