We stayed for two nights in a deluxe room. We decided to stay here for the free entry to the springs, as we had planned to visit them anyway, and the cost of accommodation elsewhere in a similar standard of resort was comparable.
The rooms are well appointed and clean, and maintenance in good order. Like any good five star hotel, any extras were charged at high profit margins. Our room had a fantastic view of the volcano, and there was a sense of privacy and seclusion which was delightful.
The food at the in-house restaurant was of an excellent standard, and the staff at the restaurant paid great attention to small details. For instance, our dessert on the last night, the wait staff noticed that it was our last evening there, and they wrote a brief farewell message on the dessert place in chocolate sauce. It's this kind of attention to detail that separates a great service from a good service. Prices, however, were very much on the high side.
The major failing of this resort is that it's located well away from town. It's too far to walk, and the cost of taxis and the charge for the hotel's shuttle discourages you from leaving their premises. This is great if you want a resort to spend time at, not so great if you want to explore the town under your own steam.
I concur with the dominant view of the springs - somewhat priced on the high side, but good for what you get.