I had the same kind of thinking as you, a hotel is less personal than an airbnb so I'd prefer to do it there. There is hopefully less chance of being disturbed, I have heard of airbnb hosts knocking to check on guests etc so they might see something through a window. With a hotel nobody but house keeping should be in there, and if I put out a do not disturb then I am hoping I get at least a few days uninterrupted.
I have thought about getting N then going out on a hike into the jungle and just never coming back, that would also make it look accidental too which might soothe my family, but it won't be easy or comfortable and I could still be found/disturbed too early.
Instead I am running a bath and taking N in there, then washing it down with champagne. The bath is my one safe place, the one place I have always had to lock myself away in and escape my troubles in life, so it's the most comforting and pleasurable place I can think of to CTB.