I found this article online, it's a few years old, strangely it boasts a blood red swimming pool.
Why is that an attraction?, I ask myself.. Is it still the same?
The island of Koh Samui's infamous Chaweng Beach is littered with hotels, but none of them comes close to the Library in terms of that all-out beach bliss-out factor. Standing out like a finely manicured thumb from the three-star crowd, this elegant and modern boutique hotel is most remarkable for its blood-red pool, the tall trees that seem to grow in, around and through the building, as well as the alabaster-white library complex that gives the hotel its name.
The Library, Koh Samui hotel review - Telegraph