Translation of bergantín

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.
I walked down the main street of the town and soon found out that there was a nice place not far from the main square. It cost around two hundred pesos which was equivalent to twenty US Dollars.
We considered staying a little longer in this region but the weather forecast foresaw heavy winds and lots of rain. We therefore decided to move on to our next destination which was the Peninsula Valdes.