You can only check in check out when host is available because he needs to be there to hand you the key. So flexibility in this regard is based on his schedule. I did checkin at 3am but i paid for an entire day for this privilege forced a checkout at 11am without a next guest.
I paid for one cleaning. Lady asked for a holiday. I was not aware that in Argentina they pay double rate. The host did not warn me of this. Just said
she wants to work on Thursday. Where the lady proceeded to drag out the cleaning an extra 2 hours.