We stayed at Kantary Bay for 3 weeks, wanted to avoid the crowded & more "popular" areas in Phuket so this spot was perfect. Have traveled a bit and never seen such hospitality, you never got without a greeting and any questions or issues were responded to immediately. We had booked a two roomed hotelroom, extremely spacious with very conffy beds and furniture! Included also a kitchen with a washing machine which came very handy. Two powerful ACs.
The hotel has a well equipped gym (though small in size) and two pools - seemed families preferred the street level one and the penthouse pool was for the rest. There was always available sunbeds. The hotel is a large complex with two buildings with hotel rooms, Nan's restaurant, Kantary Cafe (superb e.g. pastries, though hotel prices, however a great variety of everything), a clothing shop, small Trading Post grocery store and lovely garden areas. As well a breakout room with coffee/tea and cookies! Wifi worked well, few disruptions here and there. The cleaning personell is wonderful!
The area in itself is very calm, one street with a a handful of restaurants and street food. 7/11 200m away as well many massage parles. Closest beach is at the sister hotel Cape Panwa, use the free shuttle bus or have an efficient hike over there (10-15min). Kantary Bay offers shuttle busses to the town of Phuket for a fee, very handy. There's also Oral who sells tours & trips at the hotel, very convenient and worth trying out!
Overall; great value for your money and if you prefer a more secluded and peaceful area, this is your spot.