Sendai is one of my favorite city while visited Japan, it's a big city but not so crowded like you will find in Tokyo and believe me there are many good foods here with nice value and great atmosphere.
As a capital city of Miyagi prefecture, Sendai have a lot of entertainment venues, five years ago when I live in Japan (Tokyo) I visited this city very often just to have a good foods and hangout with my friends, to get here from Tokyo mostly we use Sinkansen wich mean fast train, expensive but fast, I think there are several cheapest ways to get here from Tokyo, we just looking for the easy and fast way,..
In Miyagi prefecture we can find a lot of tourism object from beach to mountain, from night life to sacred temple, it's depend on your interest., Me?,.. I'm coming for a good foods and beverages lol,.