When we returned the car, the agent was very helpful in addressing our problems, and she reduced the price somewhat to compensate for our frustrations.
Due to construction barriers and lack of signs, the rental return location was IMPOSSIBLE to find. We finally had to stop and ask directions at another hotel (not the hotel in which the rental office was located). The person at that hotel said that a lot of people ask for directions, i.e., have the same problem that we had.