Many Thanks to the following

The Holbox Tarpon Club and Mr. “Sandflea”
http://www.holboxtarponclub.com/index.html
Posado Mawimbi
www.mawimbi.net
Casa Las Tortugas
http://www.holboxcasalastortugas.com/
Hotel Amaite
http://english.amaitehotelholbox.com/
Taco Queto
http://www.tripadvisor.com/ShowUserReviews-g616319-d4562351-r187299055-TacoQueto-Holbox_Island_Yucatan_Peninsula.html