I would not let guests enter an un-clean space either;
There was nothing not clean in the house, It was just not check in time and I was not personally ready to receive her.
She said “thank you so much of letting me check in early"
I said, “Im not letting you check in early, Im taking your bags"
"well, can I just use the bathroom? Please??? Ive been on a train for 3 hours…”
(there are toilets on the train but anyway…”)
The she used the bathroom, went in her room, asked me for a map, etc.
So, checked in.
Im a NY’er in Italy and not a pushover, but there are some moments when people (around 60 years old) can insist and you would have to be really mean (or have a very good lie lined up) to say no.
The irony is it resulted in a bad review regarding check in!