I'm working on a 3 month contract and only a week to go. I haven't liked my job for a few weeks and displayed it in a negative way by not caring much and arriving up to 1 hour late in the morning. Should I quit or just work the extra week.

I'm also leaving the country after this job so it is causing the experience in this country to be soured. I barely enjoy a minute of work during the day.

Today I got a warning about lateness and using the internet too much, even though only a week go to.

It is a fairly well-paid job.
Additional Details
I was employed because I have specalist professional skills that nobody else has in the area, so they still need me.

My work area is very poor as it is near noisey equipment that emits some fumes. Would a good employer give their works such a bad work area?

Tomorrow's the day - quit or stay. I hope I have the courage to quit