In the beginning I was not aware about the 3 exclamation marks the hosts gave themselves to their identification (which means THEY ... are very important people- the guests are NOT very important people) ... I was in a personally difficult situation concerning health (not being able to fly home ) which was known to the hosts ... they invited me to check-in at 2 pm (I did not urge them, they offered the time to me 48 hrs before ...) .
At midday (checkin-date) they urged me - all of the sudden - to present a negative Covid-test result or vaccination certification ... In general, this is no problem ... but the Portuguese Government had eased the regulations one week before.
I (three times vaccinated) did not deny this request - but had a difficulty to upload my EU-Covid-Pass within minutes (technically) on the Airbnb - platform... this was reason enough for the hosts to cancel the reservation (they had received my money 2 days before) - they waited to let me arrive to the address with all my luggage ... then telling me that they cancelled the reservation - and blamed me to be a not wellcome ("rude") guest...
I (psychologist and psychotherapist for more than 25 years ) can only warn you of the the "moods" of this kind of hosts ...
Btw: the location of the flat is - really --uphill ... coming back from the the centre/sea/beach ... you need a rented car ... a bus ... or a taxi...