They were very friendly and the HR team kept me up to date with the process. The second interview was a lot harder than the first one, which is something to bare in mind.
1st stage - recruiter call, 2nd stage, task, 3rd stage interview/ chat.
All in all it was easy but you have to fit the box to work for them.
I was interviewed by 2 people but only 1 was in the invite so was surprised to see the another interviewer. Make sure you ask the internal recruiter to tell you exactly who will be attending.