The kingdom of Meroe existed in 1,200 years, only to continue in the shape of the kingdom of Nubia, which lasted another 1,100 years. Of these two kingdoms, Meroe was a great power in its days, strong enough to eat up Egypt for half a century. The region managed to impress the people of its time, housing agricultural achievements and efficient iron industry, a high culture, where an own alphabet was developed. And the pyramids have a distinct and elegant style, even if they're far smaller than the ones we find in Egypt.
The area is large enough to fill a days wanderings. Even if things are only partly excavated, and not restored, you can get a pretty good view of what has been. The pyramids around are burial monuments, and between the railway line and the Nile, a temple to the god Amun is found.

Eat and Sleep
Very difficult. Simple accommodation in a village close to the ruin area. Going back to Atbara or to Shendi will be very tempting, even if it will take a couple of hours either way.

Transportation
Train is the best way to move up and down the Nile, but buses and lorries are another option.

Going Next
100 km north: Atbara
50 km south: Shendi