Welcome to the forum Jeroen.jeroen said:
Park assist is standard on EcoSport and EcoChic. EcoStandard does not have park assist and it is also not available as an option. Park assist is definitely something you should have, as the rear view is not so good and the the high front fenders make it difficult to see where the hood ends.
The trunk space is modest, but you can fit a few suitcases in there. This picture by forum-member Xradman, with a few golf bags, should give you a good idea of what to expect:
