Stasha was an amazing guide. The drinks offered at each bar/pub were delicious, and the walk was very manageable for nearly all fitness levels. Stasha gave great tidbits of history as it related to alcohol or the present bar or pub; it put a new spin on drunk history.
If you only have a few hours in Ketchikan, do this tour. It's not too long, but you feel like you explored and learned about the town, and had a blast doing it.