We were looking for a quiet place to stay, this mostly lived up to that (except the loud lobster boats motoring by early in the morning). The location is great- it wasn't far to Acadia or to downtown. We loved being on the water. We were under the impression that kayaks were available at the house (since they are shown in a photo and the description mentioned kayaking), but found out just before check in that we'd have to pay an extra fee to rent them. Not that big of a deal, just wish the listing had been clearer.
We did not use the studio building, so I can't speak to that, but the king bed in the main house was comfortable. That bedroom got very hot overnight (even though it was down into the 40s and we had the heat turned way down so the rest of the house was freezing.)
Three stars for cleanliness: not that the house looked dirty exactly, but more like it had been cleaned maybe a week or more before we arrived. Spiders had taken up residence in the bathtub and there were some cobwebs and dead bugs below the vanity. The house is mostly dated, living room furniture looks worn, but the bathrooms are nicely updated.
These were small issues that didn't ruin our trip; overall we had a great time - even saw a seal while out kayaking. Note that getting the kayak down to the shore is treacherous with a 90 degree turn down the narrow stairs; you need someone strong. Also at high tide the water covers the bottom few steps so getting in and out is tricky.