If you are interested in taking a look around a coffee farm on a horseback, you should go to Parramos. Type in Posada de me abuelito, Guatemala on Google. You will find some information about this german country farmhouse converted to a B&B. Get a weekend package that includes bed, brekky and horse riding for Q.300 or something(apprx. $40) Take a chicken bus to Chichicastenango at Antigua bus terminal and get off in Parramos it cost like 3 Q's p/p. Then get a local taxi to the hotel...it takes around 5 minutes from town center. I loved everything about this place - its coffee(fresh coffee from the owner's finca), its food(authentic guatemalan), its atmosphere(green, fresh, cool and quiet), unforgettable horse riding(though it hurt my unprepared arse bit too much) and the hospitality of the hotel owner couple! Bet you'll have a great time.