I am trying out my luck so here is my question: Does anyone (who happens to be an artist working with clay) know where I can use a kiln to bisque a few sculptures in the Locarno area?

You'll have to go knocking on doors. Usually artists who give classes will fire stuff for you. I found this artist through google. I'm sure there are more:
www.arteceramica.ch

Dear Carmen,
You could try asking Lorraine Eidenbenz (incidentally, from the UK!) in Tegna.
http://www.toepferschule.ch/maestri/eidenbenz.php
Good luck!

Tanya Harvey Ciampi

Hello, did you manage to find a kiln to use? I will have a small kiln for sale shortly - 13 amp and fits on a balcony.
All the best
Jennie