During the day, the one way glass works well for people to not be able to see into your cabin. At night, when you put on lights, you have to be very careful to keep curtains closed as people can see into your cabin.
My better half may use the outside chair ,I do not think I will .My thinking is that if we want to open the curtain early in the morning we can wear our bathrobes . Supposedly the cabin is 197 square feet. The CM couple we are cruising with chose an inside cabin ,supposedly the largest cabin on the ship among inside ,outside or lanai .However ,my wife and I tend to be a bit claustrophobic and we took advantage of a "sale" on Lanai cabins .
If its not to our liking we will not book one in the future.