We only spent 1 night in Tortuguero And Casa Marbella was ideal.
It's not fancy however the location is great, the bedroom is confortable and the views of the river are lovely.
It's easy to grab food in the evening and to see local life as you are in the heart of the village.
We did the turtles tour as well as the morning safari boat with them. Both Victor And Roberto were knowledgeable and look after us very well.
If I was to stay longer as we are traveling with kids I might have book a place with a pool as it was very hot and the kids wanted to get in the water and the ocean is not 100% ideal to swim in Tortuguero.More