noun
reception hall; guest house
A building or hall for receiving and entertaining guests, especially state dignitaries. Can refer to such facilities in general.
新しい迎賓館が都心に建設された。
A new reception hall was built in the city center.
noun
State Guest House
Specifically refers to the official State Guest Houses in Japan, most notably the Akasaka Palace in Tokyo and the Kyoto State Guest House.
迎賓館赤坂離宮は国賓をもてなすために使われる。
The Akasaka Palace State Guest House is used to entertain state guests.