Hello Simon_M
Great!
By the way, you are visiting our country during the best season. In September, on sunny days, mountains do appear crystal clear as there is less humitidy in the air, and therefore offering better sights; in Swiss German we call it ‘picture postcard weather’, as it is the best time for landscape photographers.
Definitely don’t miss out a trip to Rigi mountain, it offers great views, the best in the area. Also, a cruise on Lake Lucerne on a paddle steamer is a must-do, and invites to unwind.
Let us know if you have got more questions.
Kind regards,
Roland