The latter part of April from 15th onwards starts to get quieter after families for Easter period and visitors for the very popular Songkran (Thai New Year) Festival on 13th start to go home. However, it is never TOO quiet, never like a ghost town, and never TOO busy. That is much of its appeal compared to places like Karon, Kata and in particular Patong on Phuket to which there is no comparison. Early April 2015 though promises to be popular as Easter is very early and Songkran is always 13th April.
The La Flora is located on the best part of Bang Niang Beach with lots of beach restaurants, others on the roads upto the highway where there are more.
The Adult Only Beyond is located on Pak Weeb Beach regarded as Khao Lak's most beautiful but more secluded one. There is a row of beach restaurants to its Right, a few more to the left and two or three on the highway near the main entrance. Other than that it is a 20 minute shuttle or taxi into Bang Niang, 25 minutes into Bang La On, Khao Lak's main township where most restaurants and shops are to be found.
You can see the latest maps of Khao Lak at tripadvisor.co.uk/ShowTopic-g297914-i10908-k… with Bang Niang at reply #15 and pics of all Khao Lak's beaches from late last November to the end of March at tripadvisor.co.uk/ShowTopic-g297914-i10908-k…