City transport is divided to the underground (lines A, B and C), trams and buses, which you can use after buying a valid ticket. You can buy the tickets at underground stations or in tobacco shops. Tickets are valid for metro, bus and tram.
Vaclav Havel Airport Prague: Bus no. 119 from the Airport to the metro stop Nadrazi Veleslavin where you change to the metro A line (green), then travel to Staromestska. From Staromestska station it is just 7 minutes walking to Golden Prague Rooms - see this link. It takes roughly 40 minutes (32 CZK / person).
Main Train Station / Praha Hlavní nádraží: From the Main Train Station take the metro to station Muzeum (1 stop). There, at Muzeum station, you need to change for metro A line (green) to station Staromestska. From Staromestska station it is just 7 minutes walking to Golden Prague Rooms - see this link. It takes roughly 10 minutes (24 CZK / person).
Main Bus Station Florenc: From the Main Bus Station you can take the metro line C (red line) to station Muzeum (2 stops). There, at Muzeum station, you need to change for metro A line (green) to station Staromestska. From Staromestska station it is just 5 minutes walking to Golden Prague Rooms - see this link. It takes roughly 10 minutes (24 CZK / person).