The Start Your Dutch course comes in 2 different flavors. First, there's the Evening Course. This consists of 12 group lessons and 2 private coaching sessions that are spread out over 5 weeks. Expect to spend about 3 hours each week on homework. The course is designed to take you from an A0 level (absolute beginner) to A2.1.
The other flavor is the 20 hour Private Course. You can opt for 5 days of 4 hours and do it all in 1 week or choose shorter days and spread them over 2 weeks. Use the contact form to work out a schedule with the teacher. Expect to spend about 20 hours on homework.
The private course is designed to get you from one language level to the next, up to B2. This is the best investment you will make to get everything out of your stay in the Netherlands.