Phos,

I see. Climate are change very quicky all over the world ! I believe that driving around is the best way to see the country too, but for this schedule is impossible (only two days in each city). So I bet to use public transport as like as bus, train and bus.
I´ve just made a reservation in a hotel in Paris...but if you have great tips to suggest, please send me too because I´d like to save some money. I made a reservation for Bern and Interlaken too, but I´m free to change all of them if I will make up my mind.
Regards,
gqueiroz2009