Doce Lunas is a hidden gem, a surprisingly serene spot given the reputation of Jaco as a party town. We visited the week of New Year's, and even though the hotel was almost full, it was quiet, and comfortable. The grounds are immaculately kept, lush vegetation, lots of flowers. The pool is super clean. The rooms are larger than any other hotel's we stayed in Costa Rica, and very clean and comfortable. Breakfast was plentiful and varied. The day we were leaving also happened to be our daughter's 5th birthday, and the staff was nice enough to bring her a slice of cheesecake with a candle at breakfast. Nice touch and will be remembered.
I even took advantage of their yoga classes, and was pleasantly surprised by the quality of instruction, especially considering that most of the students in the class were tourists.
After having been in about 10 different hotels during our trip, I can easily say this hotel was by far the best. Granted there are more luxurious hotels, but for the price, this is a great, great value. We loved our stay and hope we could come back.