I have used a couple of different places here and also used the Sheraton drycleaners. I will only ever take my clothing to Sheraton drycleaners now (I too have some very expensive pieces of clothing that I was concerned about). They did a great job - I have used drycleaners all over the world (aside from in the states)and the policies have all been similar to the one you mentioned.
Anyway I can only say that they have done a great job on my clothes and I am very very fussy. Good Luck!