Founded in Bali, the Mandara group of spas has now expanded around the world and features three branches in Thailand: Samui, Phuket and this opulent affair on the riverfront in Bangkok. On the third floor of the Royal Orchid Sheraton, one of the highlights has to be the fantastic views over the Chao Phraya River.

There are five double treatment rooms but if you really want to indulge yourself opt for one of the three spa suites or the deluxe superior suite, each of which boasts its own private plunge pool and panoramic river views.

Aside from the normal massage, scrubs and baths, many inspired by Balinese techniques, couples could also go for the special Romantic Getaway. This four-hour treatment incorporates aromatic steam treatments, a salt scrub, floral bath, aromatic massage and, finally, a facial to leave you both truly relaxed.