Each guest has her own single room, or shares, on request, a double room.

每位客人都有自己的单人房间，经要求也可共用双人间。

《柯林斯英汉双解大词典》

You're in a double room.

你住的是双人间。

youdao

If you want to change for a double room, you'll have to pay another $25.

如果你想换一间双人房，你得再付25美元。

youdao

Zuckerberg and Laine, both from New York City suburbs, shared a double room suite with Australian rower Bede Moore and musician Justin Coffin.

FORBES: Mark Zuckerberg's Olympic Connection

Martyn Hall and civil partner Steven Preddy, from Bristol, tried to book a double room at the Chymorvah Private Hotel in Marazion near Penzance in 2008, but were refused.

BBC: South West cashing in on 'pink pound'

Rebecca Nash, 22, and Hope Stubbings, 19, said they booked a double room at the Brunswick Square Hotel but when they arrived they were told it only accepted straight couples and families.

BBC: Brighton hotel accused of turning away lesbian couple