It's good! There were just a few things I'd change:

Living on the top of a mountain.

I work as a cashier on a mountain resort. And I also live here, in a building for staff. The weather here is cool in summer, and it's foggy most of the time, just like in heaven. The sight seeing here is really beautiful, especially when I look down to the city. I can see whole city and the ocean. I like gettting up early every morning, enjoying the fresh air and the beautiful view. But it's also boring to live here. I have to live with 7 roommates in a very small room. I come back to my room after work, have a shower, then dinner, and go to bed. There are no places to go out for fun at night, there is a forest is around the building.

In English, we don't use short sentances too often, instead try to use commas because it will look more natural.