Gdynia doesn't have the history or tourist attractions of Gdansk and comes off rather as a no-nonsense place with the amenities of a port city of roughly 250,000 people. However Gdynia usually offers less expensive accommodation than what you'd find in Gdansk and can still be worth a visit if you're interested in naval history as there are two museum-ships (one is a converted destroyer from WWII, the other is a training vessel from before WWI). For transportation, it is well-connected to other Polish cities via buses and trains and there are several daily express / intercity trains that begin their routes in Gdynia and end them in Krakow via Warszawa. Within the Tri-Cities, Gdynia is at the northern end of a commuter railway service (SKM). A ride from Gdynia to Gdansk via SKM takes about 25 minutes and trains run approximately every 20 minutes daily.