I cannot confirm anything for Brilliance, but I can tell you that I had 1D 7090 on Radiance in February and I would not recommend that room.
#1, it was small. I'd estimate that it was at least 3 feet "shorter" than the 1B OV balcony (9530) that we had on the first leg of that B2B. Instead of a full sized couch, it was a small love seat.
#2, the obstructed view was very noticeable. The overhang for the life boat was really an eyesore.
I don't know if the stateroom you are interested in is the same as the one I had on Radiance, but if it is, I recommend getting something else.