Płock  is a town of 127 000 inhabitants (agglomeration of 203 000) located in central Poland. The town is situated on the river Vistula (Wisła in Polish). Płock is of special interest to fans of Art Nouveau, or secesja in Polish.
If you are looking for an undiscovered tourist attraction away from the main touristic corridors, Płock is a good bet. Silent, picturesque, interesting. Recommended for a day or two.
People travel here by bus. Pex (Polski Express) or Komfort Bus serves the busy main line of the area - Warszawa- Płock- Wrocławek- Toruń. Warszawa- Płock seem to be served hourly, journey time is approx. 1 h 50 minutes. Płock-Wrocławek is served with somewhat less intensive schedule, approximately a bus is running every two hours or less. There are also multiple bus connections from Kutno.
Płock has an extensive bus system with most of the town hotspots covered. The timetables and route maps can be found on the kmplock website  (in Polish) or at the bus stops. Most of the buses seem to run a few times an hour and from experience they are very rarely late (unlike England), in fact if anything arrive at the bus stop 5-10 minutes before scheduled departure time as they do sometimes arrive a little early and tend not to wait. There are very modern buses on some lines while some have older ones but all are of decent standard. The buses do tend to get busy most days so be prepared to stand (remember that in Poland it is considered polite to offer your seat to elders).
You need to buy the ticket before boarding and they are around 3-4 zł for an adult ticket with concession prices available. They are available at nearly every food shop and easy to get, you need to scan them in the machine once you get on the bus.
There is a factory outlet of Levi Strauss (producing here). Reasonable prices, 2nd choice very cheap.
Many zapiekanka stands, especially in the center (typical 2 zł). Kebab restaurants are popping up lately-- expect 15 - 20 zł, less at the stands).
City center looks safe, compared to other cities.