Overall it's a very good place to stay. Great location, it's just in the old town center. We could walk to most of the important attractions. Public transportation and connection is good and convenient. Walking a couple of mins you can reach the bus/tram stop and take bus or tram to Königsee, Hallstatt and Redbull Hangar 7 or Salzburg airport. Breakfast is awesome. Hotel staffs are always nice and friendly. But we ran into the same situation as other travelers' experience, we stayed for 2 nights the shower gel was used up on the first day and no refill afterwards even we came to the desk to ask and remind them. You better check the shower gel first when you are in the room.
Also the room price is somehow too high. With the price we expected to get a bigger or newer room. I'd suggest you to consider other hotels not located in the old town center if you also hope to stay with a fair price. Because the public transportation system is quite convenient in Salzburg city center, you can even walk.