Have you had experience in Portuguese or you're starting from scratch? 70-10 days, including one to one is not sufficient for no more than an introduction to the Portuguese. This is not an easy language to learn. It is, for example, less phonetic Spanish. The instructor needs time to assess your needs, your ear to the language, etc. You should try to get a book about learning Brazilian Portuguese advance, preferably with the bands, and begin to use it. Then, it generates more when I get where you are.