✔ Most airlines allow your bike as your checked in piece of luggage.
✔ Pack your bike gear, helmet, bike shoes in with your bike.
✔ A bike bag is handy but a cardboard bike box with some extra foam and bubble wrap does the trick.
✔ Take your own track, bike pump, spare tubes and basic tool kit - bike shops can be hard to find.
✔ Add your bikes to your travel insurance policy.
✔ Look at a Eurolease vehicle - a cheaper option if you're going for longer than 3 weeks. Pick the model that will allow your bikes to go in the back with the seats down - saves having to break them down and pack them up for each move.
✔ A lot of accommodation have a lockable spot to keep your bike (though most don't mind you taking them to your room).