@Geoff22, every host's situation will be different, so check in and checkout times are going to vary. Some hosts work 9-5, while others are at home all day, some have self check in, some have gap days, etc. etc. Apart from all these factors, I agree with @Alexandra316 that a 3pm check in and 11am checkout is appropriate (this is what I have) and generally not an issue for most guests. However, if an 11-12 check in time would work for you, go for it! Just bear in mind, though, that you will need to set your checkout time earlier to allow for cleaning and maybe not ALL your guests will want to leave that early.