Jun 1, 2018 - 10:26 PM
I’ve come to your post after it’s a day or two old and I agree very much with what has been written in reply, especially about self catering accommodation.
I always regard Luzern and Interlaken as the twin foci of tourist Switzerland although neither is exactly a village location.
From Luzern you can get to Zurich or the Rhine falls; to Interlaken or, in the opposite direction, to St Gallen and the beautiful but often missed Appenzell area which is perhaps pushing your timing a bit unless you stay there or nearby, as suggested by Gunzel. There are several “tops” close to Luzern and you can enjoy lake cruises as part of you route to or from them. In Luzern the Lion Monument, for example, is a ‘must’ but is very popular and not always as peaceful as it can be.
Interlaken is well placed as the gateway to the Jungfrau region. You can stay in places such as Wengen or Grindelwald but if you want to explore further afield you will then have to go via Interlaken every time adding an hour to your journey each way. We like to stay along Thunersee in Spiez. It’s only 20 minutes by train from Interlaken. Spiez is far less touristy – more like a large village than a town - but still has routes in four directions. Your one to two hour travel time (or maybe a little more) takes you to the Jungfrau region, Bern, Montreux, Lausanne or back to Luzern and in most cases you can choose different routes for your outward and return journeys. The lakes of Thun and Brienz with their different characters are still close at hand and Spiez has its own ship station on lake Thun.
Have fun planning your trip. Remember, Switzerland is an easy country to travel in and the well integrated Public Transport system is unsurpassed. One note of caution: not all mountain transport is working in May and some walking tracks may well still be closed depending on the snow conditions.