This is the 418th most frequent Danish word.
flot
"Flot" means "beautiful," "great," or "impressive" in English.
Here, 'flotteste' is the superlative form of 'flot', meaning 'the most beautiful', to describe an extraordinary experience.
Den flotteste solnedgang jeg har set var i Danmark.
The most beautiful sunset I have seen was in Denmark.
In this sentence, 'flot' is used to emphasize the appealing appearance of something, in this case, the car.
Din nye bil ser virkelig flot ud.
Your new car looks really great.
Here, 'flot' is used to describe the admirable quality of the executed work.