I land at Capital Airport into T3. The following day I have domestic flight out of T1 at 7am.

Hi, dear! There are Hourly Lounges at T1 and T3.

In T1, it is located to the west side of the entrance gate 8, 3F. You can book a room by dialing at 86-010-64540985. In T3, it is located to the west of public area, Arrival Hall, 2F, T3-C. The telephone number is 86-010-64558577.

You can easily get to T1 from T3 by free shuttle bus in the morning. So, you may stay at either T1 or T3. Take it easy, and have a wonderful trip! :)