I did the Week of Rivers trip with Costa Rica Rios a couple years ago and I would highly recommend them. The food was fantastic, 3 homecooked meals a day, and great lunch on the river. The accomodations were nice in Turrialba, clean, hot showers, a pool table, and a whole courtyard to relax in after a long day on the river. We also spent a couple nights in a hotel north of Turrialba to run some different rivers. The hotel was in the middle of the rainforest, with a river and hot springs right next to it. But the best was their jungle camp, where you stay when you run the Pacuare (I think thats what its called). You stay in open air cabins overlooking the river in virgin rainforest. They also had hot showers here. If I ever went to Costa Rica again, I would go with Costa Rica Rios.