Build a permanent tree stand with sides on it and sleep all you want.
It's better to be in the woods - sleeping then down in camp sleeping.
I don't think that the deer mind it one bit. Most deer do not look up, they look out. So if something is not right, they see it a long time before we do.
Some of those new style tree stands are so comfortable that you could use them for a lazy-boy chair anyways. You ever see that commercial on TV where the guy has a telephone pole in his living-room and uses his tree stand as a chair to watch television..