We just did a 2 bedroom "suite" on her sister,"Radiance" in Dec. Loved the aft location but as a T/A it is not something I would recommend unless you are getting a very good price. I snore like a bear so it was practical but having 2 bedrooms cuts into the rest of the interior.
Concierge is a plus, especially with more occupants but the main thing is to price 2 cabins versus the suite. If it comes out OK for you, then it's probably a no brainer. And the rear balconies are always a hit with posters on the boards.