$400 - $500 does seem pretty high for a per week basis... like i said my friends where given the option to pay and additional $100 - $200 for there entire stay... which was about a month! so... to be charged that much per week... i don't know!
personally i do and try to tip the housekeeping when i can... but when ur paying that much more! it's hard to justify that! but u should follow with the landlord or whom ever ur dealing with and really find out what all that charge is including. just let them know that those charges aren't clear to u and u want to kno what they are for exactly!