Hi Donroberto:
You will have the same amount of space. There are two doors with the adjoining rooms, rather than one wall. Two years ago we had an adjoining room (first time), and it was by choice. Our teenage daughter and niece were next door...and I think that I can honestly provide feedback. If we didn't experience more noise from two high school seniors adjoining our cabin, I think you'll be just fine!
Happy sailing!