Hotel Arenal Green is exactly as promised - not too fancy, clean, quiet and peaceful. I recently stayed there for two nights. It was very affordable. The breakfast was quite tasty. The staff was very friendly. The location was outside of La Fortuna, but very close to the downtown. You definitely need a car to stay there. The restaurant was only operational for breakfast, but the staff pointed us in the direction for a great meal..
High points - Hot water, rustic but cute rooms, good view, nice front patio, great staff
Down sides - Definitely need a car, no nearby restaurants
Overall, I really enjoyed the place. Recommendation - Don't buy the tours directly from the hotel. They are extra.