I love having everything in my house spotless---especially all the light bulbs and fixtures. I can't take my eyes off them. And the shower has never been so clean. The only thing I would change is that next time I will ask for less air freshener (personal problem).
Reliability, I appreciate knowing that my house will always be cleaned as scheduled.
I also like that I do not need to worry about having cleaning supplies on hand.
Another perk is being able to call a supervisor if there is an issue rather than having to deal with it myself.