Nice!
That is as rare as hen's teeth.
I have had one in all my 25 years do that. An 8 weekly residential who is very pleasant but he is a bit OCD - flypaper hung up, ant powder put down, artificial grass and spotless cars sort of chap.
He said "could we change the schedule?" - I was about to launch into my "I do don't do longer gaps than 8 weekly" spiel when he clarified a shorter clean schedule.