Hi @Patrick177,
There are plenty of valid reasons to decline a reservation and a host should not have declined dates blocked. Perhaps guests who are frequently declined should be analyzed by airbnb. It is possible that they ask for a discount or for the host to make an exception to the house rules. Here are some examples of guest inquiries/requests I have declined:
1. incorrect number of guests
2. bringing a dog
3. plan to have a wedding ceremony/bridal shower/other event
4. ask for early checkin/late checkout that I cannot accomodate
5. ask for a discount
6. third party booking
Brian Chesky is clear in his statement of airbnb's response to the discrimination claims that more properties will be instant bookable....will hosts still be able to cancel instant booked reservations without penalty? Will those days be blocked?
"We’ll be implementing a new policy called Open Doors. Starting October 1st, if a Guest anywhere in the world feels like they have been discriminated against in violation of our policy – in trying to book a listing, having a booking canceled, or in any other interaction with a host – we will find that Guest a similar place to stay if one is available on Airbnb, or if not, we will find them an alternative accommodation elsewhere."