In the meantime i've found a mention of Hanarora (and also Hanaca-oa) here: http://www.gutenberg.org/files/46390/46390-h/46390-h.htm
I'm still reading through it to see if i can determine those settlement position.
Hanacaoa is mentioned as being up (or windward) and therefore to the east, 3 miles (not specified whether nautical or not - and i'm not sure if the book is fictional work or not) while Hanarora being to down "a few miles" to the leeward and therefore to the west.
In the book the crew fleeing on foot from Hanacaoa passed a hill to return to Hanaiapa bay... i'm inclined to think that Hanacaoa is the actual bay of Hanatekua.
Hanarora could be the unnamed bay west of Hanaiapa entrance, west of where a cascade is present (mentioned around the internet as a tourist's place to visit), otherwise it could be the Hanaohouua bay (i've checked that 'r' is a sound present in Maori language, while Marquesan language has not that sound, which is substituted by some kind of guttural stop. Taking 'r's out of Hanarora makes the name Hana'o'a, which is not that far from Hanaohouua sound).