Pension Santa Elena is a clean, friendly little hostel in Monteverde. The majority of their rooms are private (1-2 people) and incredibly clean. Their bathrooms have hot showers and are rarely busy. The staff is amazing, too- fluent in English and Spanish, just tell them you want to go bungee jumping and they'll arrange everything- even having a van pick you up from the hostel.
There's always a few people hanging out front, as attached to Pension Santa Elena is a heavenly taco stand aptly named Taco Taco. I could write for paragraphs about how delicious the tacos are, but let's just say I ate there three times in two days.