Go Milan Airport Page and click the ENGLISH button in the lowest part of the page to get the english version. Then click on AFTER YOU LAND to get the travel info. For japanese this pgae might be useful :)
Renting a car is indeed an option if you feel confident enough. You will be able to find information on the above mentioned Malpensa airport site. Hotel Eden has got a few parking places in some sort of underground garage, and I guess also Hotel Lancaster does. I will try and get more info from the Hotel managers. Otherwise you can park on the road side, and pay at the meter for the whole day on friday and for saturday morning (saturday afternoon and sunday is free).
There is a direct bus conections between Malpensa and Turin, which I believe might be the easiest way to go from one place to the other (it should take about one and a half hour, perhaps a bit more depending on the traffic). Time tables and prices are as follows:
TORINO Departure from: Terminal 1- Exit 4-Stop 18 Timetable: 11.30 a.m. - 03.30 p.m. - 08.30 p.m.Every day Price: EUR 16.50 Tickets can be bought at Airport 2000 SADEM +39.011 3000611
You can go by bus to Milan Central Station and then by train to Turin (it will take one and a half to two hours depending on the kind of train). There are many trains from Milano Centrale to Turin (every hour or every half an hour in pick time). Train tame tables can be found in TrenItalia page or for english version Train schedules are:
If you arrive at Turin central station, called Porta Nuova, you can take a taxi or a bus/tram: tram n. 18 or bus n. 9 (get off when the bus terminates), n. 67 if you are at the Eden Hotel, tram n. 4 or bus n. 63 if you are at the Lancaster.
If you arrive from Malpensa(Milan) with the bus service, you will end up a little further away. You can either take a taxi or bus n. 9 (get off when the bus terminates) and then walk to Eden and take tram 16 to Landaster.
Train reservation and purchase of the ticket can be done directly on the web (only nuisance is that one has to register)
Departure station is Torino Porta Nuova Arrival station is Trieste
I recommend the train leaving at 9.07 and arriving at 16.13 (only one change, in Mestre), but there are other trains. Choose mandatory reservation and the Self-Service delivery, which means that the tickect can be collected at the station from automatic machines. 1st class seats are more confortable, but also 2nd class is fine. There are fewer people in 1st class, more available seats.
I expect no problem even if the ticket is bought at the station just before departure; in that case I only recommend to be there at least 45-60 minutes before departure. I'll be also travelling by train.