Barnes Lake has a wide opening to the Ocean giving the lake a tidal effect.. You could land here but you would be at the mercy of the tides if you stayed. It is not really a lake.
Link to Forest Service site. http://www.fs.usda.gov/recarea/tongass/recreation/camping-cabins/recarea/?recid=78660&actid=101
Link to Recreation.gov to book cabin. http://www.recreation.gov/camping/Barnes_Lake_Cabin_Ak/r/campgroundDetails.do?contractCode=NRSO&parkId=71880&topTabIndex=CampingSpot