The place is right in the old center and if your plan is to enjoy that, it is perfect - the view on the castle is splendid, you can walk to it in half an hour or something, the place has an elevator going right into it (private elevator if you like), check-in is easy and the place is very tidy and very stylishly decorated.
Our only "negative" was that we only stayed one night since we had a long layover and didn't have time to enjoy all the amenities like pool, otherwise it would be even better :)