I love Interlaken
Set in the beautiful Swiss Alps, it is a great place to try out a lot of adeventure activities or explore the highest accessible peaks by gondola etc by a short train journey. Trummelbach falls in nearby Lauterbrunnen definitely worth a visit. Who can ask for more than 10 waterfalls inside a mountain? The walk back to Lauterbrunnen was also amazing. 1 hr on an injured toe! No need to book activities, all can be booked on arrival in town!
Insider Tip:Schuh. Eat there. It's a lovely cafe just off the main public green. They have chocolate workshops everyday at 1700 if you have an evening spare, just but a ticket from the patisserie inside and you get credit to buy chocolate later! Their passion fruit tart topped with raspberries may be the most delicious cake I've eaten in my life. Also whilst in the Alps try to eat some Rosti if you get a chance. Delicious potato dinner which is a good Swiss specialty.