The town is small (5,000 inhabitants), with a Catholic church roughly 500 years old and a Protestant church just over 20 years old. Whether you travel by rail or by river you pass through Nieszawa, since it is the Russian customs station for river traffic.
The Handbook contains all sorts of tidbits. Page 3 says that the country from here to Warsaw "is dotted with miserable-looking villages and is largely populated by Jews." Are those two comments meant to go together? We shall see. I have a sense that Baedeker and I do not always see eye-to-eye.
Alternate placenames: Нешава/Neshava