Please contact the hotel directly to see if they offer a taxi service: http://www.hotelmanglares.com.mx
If not, you should be able to hire a taxi from the hotel door. The latest info that we have indicates that it should cost approx. 600 pesos each way. There is also a bus service provided by the Noreste bus line. Departs almost every hour from 5 am to 8 pm. Cost is 47 pesos.