Ianto smiled and shook his head at Sulu's complimenting him, but was grateful both for the compliment and the fact that Sulu was planning on going right to sleep as well. Not that he didn't like to talk, but as soon as he got comfortable again, lying down with Sulu under the blankets, warm and content, he'd probably be out like a light and not looking to be up for a while. Not until Sulu had to leave, at least. Which he could only hope the other man would think to wake him up for. It seemed silly to want to ask, but...

"Should you be setting some sort of an alarm?" he asked. "So I don't keep you here for too long, or anything?" Not that he'd mind keeping Sulu there for longer, but he didn't want to keep him from his job. If Sulu didn't want to dig out his comm to set an alarm, there was always the alarm clock on the nightstand beside Ianto's bed that he could set. Or his phone, which he'd remembered to dig out of his clothes before he tossed them in his hamper and had set on the nightstand as well.