With kids in tow we enjoyed our stay at the Novotel Surin beach a year ago for something a little quieter before moving in to Patong. As always, recommendations will depend on who is travelling (adults / children), budget, how close to tourist areas / nightlife you prefer etc. But in general, given stays in So Sofitel Bkk the following would seem to be the choices:

Hua-Hin / Cha-Am:
So Sofitel Hua Hin
Veranda Resort Cha-Am - Hua Hin (MGallery)
Hotel V Villas Hua Hin (MGallery)

Koh Samui:
Banyan Tree Samui

Krabi:
Hotel Sofitel Krabi

Phuket:
Banyan Tree
Pullman Phuket Arcadia Naithon Beach
Pullman Phuket Panwa
Avista Hideaway Phuket Patong (MGallery)
Avista Grand Phuket Karon (MGallery) (opening December 2017)

Pattaya:
Pullman Pattaya Hotel G
Baraquda Pattaya (MGallery)


Alternatives:
Hua-Hin / Cha-Am:
Novotel Hua Hin Cha-Am Beach Resort

Koh Samui:
Novotel Samui Resort Chaweng Beach
Mercure Koh Samui Beach Resort

Phuket:
Hotel Novotel Phuket
Hotel Novotel Phuket Vintage Park
Hotel Novotel Phuket Karon Beach Resort and Spa
Hotel Novotel Phuket Kamala Beach
Hotel Novotel Phuket Surin Beach Resort
Novotel Phuket Kata Avista Resort and Spa

Pattaya:
Novotel Pattaya Modus Beachfront
Mercure Pattaya Ocean Resort
Mercure Pattaya


Further afield:
Novotel Rayong
Novotel Chumphon
Hotel Mercure Koh Chang Hideaway