Emilie,
Look at p35 for Nokio's post on Stage 2 - that should be a good start. Read through the rest of this thread too - searching for Stage 2 will help find relevant posts - I know there isn't as much on here as there is for Stage 1, but there's still helpful stuff.
I flew to Southampton for my Stage 2 (driving was just too far) and stayed in the Fareham Premier Inn (this is where HR recommends). There was a discussion about getting to the CTC on here a little while back - have a look at my previous posts on the Premier Inn and you should find what other people wrote.
Hope this helps, and good luck