Nothing really. Perhaps the main road was a bit busy, but if you are in the Backhouse or Plantation village, it's still very quiet compared to say, Waikiki.
The best location possible on the North Shore. Spacious accommodation with truly alternative, fun and quiet wonderful atmorsphere. Lots of home-made random crafty inetrior perks, wrap around porches, amidsts chickens and geckos, random things for guests use including a guitar and bike and snorkel rental (though not the best bikes for long trips).
Some other people noted that it is not very clean, but all important things (room, bed, bathroom, kitchen appliances and sink) were impeccable during my stay. The common table on my floor was a bit sticky, but overall the premises felt clean and comfortable. I think that to some people who are used to new, modern, gated-community or marriott style dwellings, places with more character and unconventional style may appear less clean.
I highly recommend this place to everyone. It completely blew me away, and I never wanted to leave.