Kanchanaburi is without the place to be for you to go, you can by train from Bangkok, cost was about 300thb each, you should Google the train station and take a taxi to the station from the hotel
as I didn't eat the shit it doesn't matter much as do eat real food, none of the pzazz shit or anything else that you can recommend, as it happens I love thai food and some of the best food in the world today is thai