The space was clean, well-prepared, check-in was a breeze, and during our stay, Denise and her partner provided some great island tips over the phone.
I would second Denise's description that the place is good for solo travelers or a shorter stay for a couple. We had a longer stay, and were traveling heavy with watersports gear, and things were a little tight.
I feel the "very quiet and peaceful place" in the description needs an asterisk. We did have a few of the hoped-for blissful nights being lulled to sleep by the sound of crickets and the cool upcountry breezes rustling the leaves outside the window, but for the first few nights, perhaps because we were coming off a full moon, the local animals were going bonkers. The first two nights, we were awakened in the wee hours by a violent cat fight/attack right outside our window, and had trouble getting back to sleep due to a barking dog across the street, and the island's feral roosters. The animals calmed down after a few days, but when the workweek arrived, we found there was a house being built across the street, with construction noise starting at 7:30AM, and a blaring radio at 6:45 one morning (maybe unrelated to construction). One night, the Tyvek wrap tore off the house in a windstorm, and made quite a racket until the workers arrived the next morning.
Bathroom use and footsteps in the main area of the house were audible in the room,
and while not obtrusive, they lent a less private feeling to the space.
There was a dryer listed in the amenities, but this was not in-room and was not readily accessible to us during the stay. It may have been different if Denise, and not a tenant/caretaker had been occupying the main house area during our stay.
I love staying Upcountry, and Denise's Casita was great for what it was, but compared to some of the options elsewhere, I was ultimately left with a feeling that the pricing on this listing is driven more by the scarcity of upcountry lodging, than by intrinsic value.