After staying in the Rialto Wigwam in 2010 we decided the Holbrook site was a must do. As you say no web site but I just called the number ( 001 928 524 3048 ) to find they only answer the phone between 4 and 9pm local time. Called back and sorted booking in about 2 minutes, job done. Looking forward to September!
Just found their website (not easy because I did a cut and paste from initial post which had it incorrectly spelt as Wigwham) at https://www.galerie-kokopelli......om/wigwam/