Not all National Trust properties are open yet, and those that are require pre-booking via their website, no later than 15:00 on the day prior to visit.
If you, or any of your party have a new persistant cough, or develop a fever of 38C, we would instead advise you to use the NHS's dedicated website for professional advice.
The courthouse is a fine example of an early 15th-century timber-frame construction, set in an idyllic village. The ground floor (now tenanted) was the village poor house. You can visit an exhibition on the village in this property. Please note, there are very steep stairs. The courthouse was the base for parish activities for four hundred years and was the venue for the annual manorial court which dealt with tithes and crimes such as selling bad fish, brewing without a licence, or overcharging customers.