I recommend a very nice meadow walk between Frience and Solalex. There is a detailed walking map in the apartment.
The Refuge de Frience is a great restaurant to start / end the walk.
 
There are also nice walks direct from the apartment. A walk to Huomoz (below Chesieres) is very pleasant.
 
For a special evening meal out, the restaurant at Solalex  Le Miroir d'Argentine is very good. The waiter gives a bit of a show. He draws the menu in front of you. Nice for the kids as well. The food is very good but it is expensive. Need to book.  (Tel: 024 498 14 46)
 
(For an ordinary meal out there is a pasta place (Pasta Basta) 400 m down the road from the apartment.)
 
Olympic museum Lausanne is well done if you have interest.
 
There is a tree adventure place at Aigle (Arbre Adventure). Adults to if you like.
http://www.parc-aventure.ch/Aigle/
 
The spa at Lavez Les Bains is a must do for me every year. Works well for kids and adults. Indoor & outdoor pools (with amazing mountain views). There are lots of different rooms, steam rooms, relaxation rooms, as well as an ice room you can sit in !
http://www.lavey-les-bains.ch/index.php?id=376
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If you fancy a boat trip a round trip on a the ferry on lake Geneva is a nice way to spend a few hours. You can get the ferry at Villeneuve.

At Le Bouveret there is a water park (flumes etc). Next door is a more sedate outdoor pool in a park which goes right up to the lake. So you can sunbath on the grass and bathe in lake Geneva.  Pictures on the website:
http://www.bouveret.ch/site.htm
 
There is a labyrinthe (near to Lavez le Bains) which claims to be the largest in the world. Also has lots of games activities good for all kids.
http://www.labyrinthes.ch/index.cfm?langue=en
 
Tourist website:
http://www.villars.ch/en/welcome.cfm
 
Bike rental in Sports Haus near Eurohotel
 
There is a salt mine at Bex.
 
If you like to go carting there is an indoor / outdoor carting track at Fun Planet near Villeneuve.