Last month I spend a week in Dublin. I stayed with another student in a host family, but we did a lot of activities during the day with all the group. I liked the experience a lot, because we learned about a different country and culture and the host families and the people who came with us were so kind.
I think this sort of trips are so interesting in general, because you meet new people and you get to know about a different culture from ours, and you can improve your English or at least get more fluency.