If you don't mind being outside the center, this welcoming, easygoing guesthouse near Playa de Chinchorro is an appealing option. Pleasant rooms, friendly English-speaking staff, a spacious lounge area, and access to kitchens, laundry and bike hire (CH$8000 per day) draw a wide mix of travelers.
It's about 2km northeast of the center. Catch a colectivo (CH$700) or micro (CH$500) along Av Santa Maria.