Sort the bins once and stop guessing
Bin arrangements vary by property and location. Reading them once is easier than guessing for the rest of the week.

Find the local instructions
Look in the cottage information for the relevant containers and what belongs in each. Do not assume the colours or categories match home. If instructions are missing or inconsistent with the labels, ask the manager before sorting a large amount.
Check whether there is a separate food-waste arrangement and what bags, if any, should be used. Follow the property's guidance rather than improvising with whatever packaging is available.
Locate the outside bins as well as the kitchen containers. On a shared site, establish which ones guests should use and whether there is a particular access route.
Make the kitchen easy to use
Give each stream a clear place from the first day. You do not need an elaborate station; the supplied containers and a shared understanding are usually enough. Let everyone in the group know the arrangement so one person does not have to re-sort everything later.
Keep waste away from food preparation areas and manage it regularly. Follow any instructions about securing outdoor bins or keeping lids closed, especially where animals may investigate.
Avoid leaving bags beside a full bin without asking what to do. The owner may have an overflow arrangement or another collection point.
Include departure
Read the checkout request concerning rubbish before the final morning. If guests need to take bags to a particular point, allow time and keep the necessary key or access information available.
Do not leave unwanted groceries or household items as a presumed gift. Ask whether anything can be left, and otherwise take or dispose of it appropriately under the local instructions.
Check the bathroom and bedrooms as well as the kitchen. Small bins are easy to overlook when bags and coats are already at the door.
Getting this routine right is a modest part of being a considerate guest. It also makes the cottage more pleasant to use while you are there, without turning sorting rubbish into a daily discussion.