Best advice I can give you is to visit the place/area during the day and later at night. Should give you a good idea of the area will be like. Also make sure the street isn't a cut through and is well lit, that can be annoying if you have on street parking.

You can also call the Worcester PD non emergent number and ask them. There are also resources online that will show you police reports / crimes for that street and area.

Keep in mind this is a city, so you'll always want to have your head on a swivel no matter what. But as cities go Worcester is far from the worst. (I use to live in Springfield).