There is a stairway in about the middle of the aft deck so from 2713, you might notice it a little bit to the right of your window frame when looking out from your cabin. I guess that's what might be referred to as an "obstruction". We didn't find it bothersome but we tend not to spend very much time in our cabin. If you want to take photos, head outside or up the stairwell to the promenade deck. There are some mechanical noises outside on that aft deck (not sure what they're related to) but it was quiet inside the cabin. We did notice a little bit of noise in the morning when docking but by then, it was usually time to get up to start the day. You are correct - the window is behind the bed so you can't see out while in bed - you have to turn around. Also, I don't think there is a bathtub in any of those 3 aft cabins - only a shower. Hope this helps somewhat. If you go on to the HAL website, you can check out the various ships and deck plans, and there's also photos of the various cabin types (inside, oceanview, veranda, etc.) which will show you the layouts.