The Suwan Palm is located in Bang La On, the area normally referred to as the centre of Khao Lak. Here I can personally recommend the following restaurants-
Muanlai
Phu Khao Lak
Ruen Mai
Everyday
Jai
Bang La On has a good range of restaurants, bars, shops, banks, ATM's and tailors. Most of these will be open in July although this is the low season in Khao Lak. Have a look at Khao Lak Map for the latest map and Guide to Khao Lak Thailand: Photos & Reviews Khaolak Resorts & Hotels for additional information and listings.