This mountain restaurant & hotel is a short walk from the Schynige Platte mountain train station.
You can dine on a big outdoor terrace with panorama views across the Jungfrau Region and Interlaken. If it's chilly, they have plenty of indoor seating with large windows to let in the view.
Location: top of mountain train from Wilderswil to Schynige Platte
Open: July to October
Website: en.hotelschynigeplatte.ch
This is a great place to enjoy the views after your hike or if you aren't hiking at all. They have a self-service buffet on the lower terrace and table service at the Panorama restaurant upstairs.
I like to have coffee and cake here before we get on the trail. If you are really hungry, you can enjoy their breakfast buffet until 9:30.
Mountain Hotel
The hotel would be a particularly special place for an overnight, where you can enjoy the sunset and stars in relative solitude since day trippers must leave on the last train before 6pm.
They have a "Dine and Sleep" offer that includes your train ride, 4-course meal, and overnight.