I am a regular customer at IBIS Delft for many years. I have always been very satisfied with my stay and the staff. Furthermore, I fully understand your check-in rules, and that if there are rooms ready it is possible to check a bit earlier.
This time I arrived just after 1 pm and wanted to check in and asked if a room would possibly be already available. She checked and said that I could have an early check-in for 15 euros extra. If I did not want to pay the 15 euros, I had to wait until 3 pm to check in. This girl was rather rude and abrupt, which I am not used to at IBIS Delft.