I chose Nui Spa because it offered a private area. I stayed for three and a half hours and was able to relax and enjoy myself. The check-in process was smooth; I just showed my Klook reservation QR code at the reception, and there were no complicated procedures! The mud bath and herbal bath were completely private, and I was able to use them for longer than the allotted time, which was great. Please note that the showers and powder rooms are basic. The changing area was also shared by men and women and was a simple setup, similar to a fitting room in a clothing store. There was a simple Panasonic hairdryer, and even though I have long hair down to my back, it had enough power, and I had no issues using it! A free Grab discount voucher was also included, which saved me money on one-way transportation. Overall, considering the price and other factors, I was highly satisfied and would definitely recommend it to others!