Hi Luke,

I will do my first Interrail in central/east europe soon, so i can't help you sorry. I'm interested in itineraries too, and advices, things that a few people know... I will do Austria and Czech republic especially ^^ 

I hope you will get answers that will help you!

It's hard to advise without knowing what your tastes are. Cities, mountains, or beaches. 5* hotels or couch surfing?

You've chosen some good countries, which are easy to get around by train. And there are some good itinerary suggestions on the Interrail site.

https://www.interrail.eu/en/plan-your-trip/trip-ideas

Have a look at those as a starting point, and other members can probably maker better suggestions once you have some more specific questions.

Thanks for your reply.

I would be up for a mixture of cities, mountains/hikes (especially in Switzerland), beaches.

Hotels not high on the agenda, rather be out sightseeing/doing stuff.