Manakin Lodge is middle of the several points you can get Tours informations and make reservations from here.

Cloud Forest Reserve, Hikes
Canopy tours or Zip line
Night tour
Suspension bridges
Horseback riding
Trapiche and coffee plantation tours
ATV tours
Private or schedule transport in Costa Rica for $35 from San José or Puntarenas. And $45from any other place in Costa Rica (door to door service)
Jeep boat jeep from Monteverde to Arenal or Arenal to Monteverde (is easy and fast for get to the town)