What is the correct holding altitude for the missed approach at Unalaska (PADU)? On this approach plate, the holding pattern shown is depicted for a missed approach:



However, in the notes, it says to


  Descend to 6000 in holding pattern.


even though you should only climb to 4700 feet, according to the missed approach procedure:


  Climb to 3000 via 166° bearing then climbing left turn to 4700 direct DUT NDB/DME and hold.


What does the note actually mean (especially since it seems to be implying you would be higher than 6000 on the missed approach procedure)?
That note actually refers to the holding pattern in general, not to the missed approach procedure. Your reading of the missed is correct.


  Descend to 6000 in holding pattern.


Refers to descent from the MSA or any other enroute altitude. Before transitioning from enroute to the outbound initial segment (departing the IAF) the pilot must descend in the hold to 6000. Once leaving DUT outbound, descend as specified to 4700.