Translation of soot in Spanish

So we first went to look for other hotels in the area, some where horrible even though they were rated as three star hotels. In the end we bought the three day voucher at the travel agent's office.
Sammy our cab driver brought us to the hotel, he promised to pick us up a few hours later. We took a shower and rested a little. I could not sleep because I was too excited of being in a new country.
We woke up very early because we wanted to continue to Bariloche in Argentina. We bought some food and sat down by the lake to eat a breakfast sandwich. It was so foggy that we could not see the volcano.