Please capitalize where necessary: one child may stay at the price of sek 210 per person per night in an extra bed.
A: One child may stay at the price of SEK 210 per person per night in an extra bed.

Please capitalize where necessary: other games like bunnerific
A: Other games like Bunnerific

Please capitalize where necessary: the threshold and entrance are what form the first impression visitors and customers have of your company.
A: The threshold and entrance are what form the first impression visitors and customers have of your company.

Please capitalize where necessary: in the words of laforet: free works only if the project is really impressive, but do no more than once per year, without letting it become a habit.
A:
In the words of Laforet: free works only if the project is really impressive, but do no more than once per year, without letting it become a habit.