For a sweeping view of the town and valley, head up to the miradores (viewpoints) overlooking town. Taxis charge around AR$150 to take you to the Mirador del Sol, halfway up the mountain, and then another 12km to the Mirador de los Condores, which is on top of the mountain ridge, and gives views in both directions.
In Rincón del Este, 2km from the center, on the road to the miradores, the Reserva Natural de Merlo is a lovely spot for creekside walks up to a couple of swimming holes. Tour operators in the park offer a range of activities including guided walks, zip lines and rock climbing.
Serranias Tour is one of the many established tour operators in town. It offers a variety of guided tours and activities.
Merlo has a decent range of accommodations options for a town its size, mostly on the budget side of the scale.
While you won't be able to indulge in gastro feasts or varied cuisines in Merlo, the town offers a number of good restaurants, mostly serving Argentine food.
Drinking & Nightlife
The beer craze has caught on in Merlo; head to La Cerveceria to try some microbrews. Or check out other cafe-bar options scattered around the center of town.