It is true that there was a "late checkin extra payment" notice on the listing for those checking in after 23h, but I didn't get to that bottom line to read it, and the host didn't mention it when we talked about my checkin time the day before arrival.
Also, he didn't mention the extra tourists tax payment until arrival.
To sum up, we had to pay an extra 36€ that made our stay not as cheap. For that money, we would have stayed somewhere else.