Lenzerheide, Switzerland

Lenzerheide isn't a big ski resort but it's cozy. The main street through town has an upscale look and feel. Not many concrete high-rises here as they've seem to have a handle on controlled growth. Mixture of new and old.

Is this place hopping or is it dead in the summer?
Quite a busy place.

Is there a lake and/or golf course in town?
Walkers, cyclists, joggers and fishermen were enjoying the good-sized lake at the edge of town

Arriving by car the only option?
Regular bus service from the valley floor city of Chur.

Does the place feel claustrophobic?
The valley is too narrow for my taste.

Lots of choices for acccomodations (hotels/ chalets) and do I have recommendations?
A selection of three and four star hotels but I don't have any recommendations.

Could I spend a whole summer here or would I get bored?
Five days would be enough before getting bored.