Affordable accom. off Samui (honeymoon)

We saved for 10 years to finally have honeymoon in Thailand & mid 30's couple spending 5 days already in Samui wanting to explore further to relax, not party that's accessible from Samui.


Our budget is around ฿4,250 or so ($200-250AUD) per night for 5 nights anywhere within boat ride of Ko Samui. Would love any suggestions for a nice peaceful place or hotels to stay and relax with beautiful views. 


Any suggestions or experiences would help & be appreciated!