Central station is the hub for train travel in Warsaw. The ticket counters are easy to use and…read morestaff are communicative, but be prepared with a translator app just in case, if you do not speak Polish, since you may have questions. There are many shops (coffee, drugstore, convenience stores, etc) and the station is also connected with the mall. Remember to bring some coins with you when you travel in case you will need to use the restroom (3 zl). The restroom is very clean and well-serviced.
The station is located right in the heart of downtown (Śródmieście) so connections to everywhere else or your hotel is easy. The tram, buses, and metro are all within a few minutes' walk (and you can purchase tickets directly onboard the buses and tram).