Hi there,
You can combine a few nights in **Khao Lak**, located a 2-hour drive north of Phuket, with a few nights on **Phuket Island**. From Khao Lak, it’ll be easier to explore the **Similan Islands** in a day—those are the ones right in front of Khao Lak. Even better, the **Surin Islands**!
From Phuket, you can visit the **Phi Phi Islands**, **Phang Nga Bay**, and other excursions with a French-speaking guide at asievacances.com (click on ‘Excursions’ then ‘Phuket’). For your hotel in Phuket, I’d recommend staying in the northern part of the island (like Bang Tao, for example) because there’s quite a bit of traffic when heading to the central-southern beaches (Patong, Kata, Karon…).
Alternatively, you could start in Phuket, take a ferry to Phi Phi, spend a few nights there, then go from Phi Phi to Koh Lanta (and stay a few nights), followed by Koh Lanta to Krabi. Finally, return to Phuket at the end of your trip. Normally, I book through: aonangtravel.
Have a great trip and make the most of it! [:)].
Pierre