I received a letter of admission for the advanced studies in European and International Business Law program of Leiden University. Any thoughts on the program from someone who is or was enrolled in the same program?

Hi - I graduated from this LLM Adv programme last summer. Doing this particular LLM was one of the best decisions I've ever made. The law school is great, and the professors are all first rate. The year's pretty tough going (don't expect a summer holiday), but the course covers everything in such detail that you really feel like an expert afterwards. Also the teaching method of small, highly interactive, seminars is very effective.
Downsides - you will develop a caffeine addiction