The Prophet ﷺ used to offer his night prayer while I was sleeping across in his bed. Whenever he intended to offer the witr prayer, he used to wake me up and I would offer the witr prayer too.  

كَانَ النَّبِيُّ ﷺ يُصَلِّي وَأَنَا رَاقِدَةٌ مُعْتَرِضَةً عَلَى فِرَاشِهِ فَإِذَا أَرَادَ أَنْ يُوتِرَ أَيْقَظَنِي فَأَوْتَرْتُ