I would say this listing is far from a "boutique hotel" as it is described. The pictures, however, are an accurate representation of what you will be staying in - nothing more, nothing less. I would describe the Hana Inn as a no-frills, economy hostel that you are using only as a means to lie down for the night just to continue your trip in and around Hana the next day.
It is an old house with old furniture and if you look closely, ants freely roam on the walls. However, the bedding itself was clean and the sleep that we had was comfortable if you can tune out the distractions.
For some reason accommodations in Hana are very pricey; some of the oceanside resorts are around $700-800/night. I suppose you need to consider this when you look at the price of a night at the Hana Inn.
Lastly, our host Gabby was very friendly and pleasant to deal with, and he seemed to be genuinely working hard to improve the quality of his guests' experience at the Inn.