An annex at the back of Nyasvizh Castle has been converted into a hotel. Staying here is a good way to experience the castle after-hours, sans crowds. The rooms are small and stuffy (no air-con or fans) but have desks, flat-screen TVs and sparkling bathrooms.
Upgrade to the 'VIP' category if you need more space. Breakfast is in the Hetman restaurant in the castle courtyard.