Termas de Papallacta hotel is the best I ever been. The hotel consist 53 cabanas with 22 pools technically as you step out of your cabana there is a hot spring pool.
They have a huge amazing Spa, indoor Pool with waterfalls, massage rooms. Three Restaurants that offer delicious meals, great variety. The buffet breakfast is everything you can desire for.
The only negative I can say is the hard rock thick pillows, inpossible to sleep on. I requested a softer pillow and they delivered it to my room. Service is top notch, though not everyone speaks enough English, but I won't complain about that.