Translation of versteinern

I hope you could understand my last letter to you. You see, when I write in Spanish I am not very confident. I always question myself and each and every sentence takes about fifteen minutes.
We had time to walk around the waterfall but refrained from entering the little lake at the bottom. My fellow tourtakers were quiet nice and we spend a while just sitting in the grass near the water.
Luckily the town was small and the hotel manager could call all taxi stations. They checked it through their radios and an hour later the driver was back with our bags. He did not want to be paid extra, but I insisted.