It is easy, change to English and then choose your dates and stations. Venezia for Venice and one of the five towns of Cinque Terre, depending on which town you wish to stay in. You will have to change trains.
Shankari Devi temple and Tirukoneswara (Siva) temple are in the same complex on a small hillock, in the town of Trincomalee. This town is on the north east side of Srilanka and about 260 kms from Colombo (via Dambulla). One can go by bus or taxi from Colombo to Trincomalee.
Being the commercial capital of the country, Colombo is the busiest city in all of Sri Lanka. As for places to stay in Colombo, there are plenty. In the heart of Colombo you will find a variety of hotels including the the following. Cinnamon lakeside, Galle Face Hotel, Hilton, Galadari and Taj Samudra to name a few.