The main reasons I chose Kapitel Zwei were: 1 competitive prices, 2 goos reviews, 3 location. So…read morelet's start. They offer intensive german courses 3 hours a day (4 units of instruction of 45 min) from Monday to Thursday, 4 weeks. Total 64 units of instruction for 222€. They have courses from 9-12, 12-3, 3-6 and 6-9. You get an official european level within 2 courses (so 8 weeks). They do an entry level test to place you in the right level.
We were 11 students but 2 quit in the middle and most of the days someone was missing son average 7-8 students. That's pretty good for the course.
At the beginning of the course I wasn't happy with my course and teacher. The teacher was playing most of the times games, and I think we should have followed the book more. Most of the students were always late (except 3). I tried to change but there were no empty space in other groups so I continued. Actually it got better through the days, so I am glad I stayed. The teacher was teaching more grammar, and we started to read a book. I find the course very well to know german to everyday life and to speak. We did a lot of exercises in groups, to speak, which I consider great, as now I am able to speak (even though I know I make mistakes), and I loose "the fear" talking in german. I did here B1.1 and I signed up for a B1.2 next month. I am not sure if only with the intensive course you will be able to get through the official german exams, as there aren't too many hours, but they have special courses for that too. I will see, as I have to prepare for the B2 certificate.
I think they should include Friday as day of class, so in total make a course of 80 units of instructions, which is recommended for each sub-level. And another thing: we made a 15 min pause after 1,5 h, which it is necessary in order not to get crazy, but sometimes this pause was 20-25 min. My teacher was late couple of times, so if you do the total, we didn't do 64 units of instruction. For me it's fine because I work every day at home too.
The school is right in Alexanderplatz, which is Berlin city center and a great location. The staff is very friendly. As far as I know they speak English an also Spanish, which I really appreciate it.
Anyways, I was happy with the result, and I am going to continue with them.
To conclude, I would recommend this intensive course, it's a very good course for the price!