A realy good location right next to the park in Bocas del Toro is Hostel Heike. It is one of the older places in town (Marcial stayed here six years ago). The rooms are clean and really simple, but don't expect daylight. They have a kitchen you can use and every morning free coffee, tee and pancakes. There is also a beautiful comfortable rooftop terrace with plants, lounge chairs and hammocks. A bed at the dorm costs around 8$, a private room with shared bathroom is 22$.