Train Station ⇒ Hotel Leidinger

Exit the central station through the main exit and you will see a tram station right in front of you. From there, you take tram number 1 in the direction of Brebach or Sarreguemines. Get off at Landwehrplatz (three stops). From Landwehrplatz, walk down Bleichstrasse (on your right hand side in the direction of the tram). From Bleichstrasse, take a left turn into Mainzer Strasse. Your hotel is number 10.

The tram will take about 5 min, and the walk to the hotel another 5 min. Tickets for the tram can be obtained from vending machines at the tram station (unfortunately, they cannot be bought in the tram itself).

Alternatively, you can take a taxi from the train station to the hotel, which should be fairly inexpensive.

Hotel Leidinger ⇒ Campus

From your hotel, walk back to the tram stop. Take any 1 tram in the directions Siedlerheim, Riegelsberg Süd or the like to for one stop to Johanneskirche (or walk there in about 5 minutes). Get off the tram and walk to the Rathaus bus stop (right by the gothic town hall that's behind you and to your right when you get off)

From the Rathaus stop, buses 101 and 102 (direction Dudweiler Dudoplatz) and 109 and 111 (direction Universtität) leave every 5-10 minutes. The bus driver sells tickets in case you haven't bought one at the tram stop already.