How easy to pick up keys from the property?
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It depends on the property. If this is somewhere that you booked through https://booking.com , go to your booking and ask the question there. This is a forum for users, you won't get an answer from https://booking.com
It varies. Sometimes it's just that the reception is not staffed all the time, so you just need to let them know when you expect to arrive so they can meet you. One apartment I booked left keys under a rock nearby. Others have "key safes" with combination locks, so they just send you the code and instructions.. Often, they will have a box to leave the keys in when you depart.
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