Unfortunately I hadn’t been in a summer language school,but I know how to improve and how to speak like a native English speakers.Every day I listen some English podcasts especially couch shane’s podcast it helps me to understand english speakers and my advise is to learn more english words.Learning English is easy, if you have dream.
If I went to a summer language school I would prefer to stay with a host family, because this is more interesting. They will tell me about their traditions and I will tell me about our. If I would speak with them it will be good for my language, I will improve it. Yes, maybe in hostel I also spoke with people, but living in family is more comfortable. Maybe they have children and I will find friends. For improve my language I am watching movies in English and reading books. In English, the most difficult is grammar for me