Kantiang Oasis is a small family run hotel, Nan who manages the place is always happy to help, there are plenty of activities that he can arrange for you and they also have scooters for rent.
The other staff are really friendly and the breakfast is excellent, especially the pancakes!
The hotel is a 1 minute walk from the beach. The beach at Kantiang Bay is sandy, (not all beaches in Koh Lanta are like this, quite a few are rocky or full of stones.), it's perfect for sunbathing and swimming.
Overall the Kantiang Oasis is a little gem and is excellent value for money, will highly recommend this place to anyone who is after a nice chilled beach resort, it is not as busy as Phuket or Phi Phi and it's a great place and area to escape to from the hectic life that can be Thailand.