Matthew Poole and continuators on 2 Samuel 11:2

2 ¶ And it came to pass in an evening-tide, that David arose from off his bed , and walked upon the roof of the kings house: and from the roof he saw a woman washing her self : and the woman was very beautiful to look upon.

Where he had lain, and slept for sometime; being possibly disposed to sleep after Dinner, by reason of some Excels committed in Eating, or Drinking; and indulging himself in his Lazy Humour, which may seem very improper for so great a Prince and Captain, who had so many and great Burdens upon his Shoulders, especially in a time of War; and therefore such Practises have been condemned by Heathens: and Homer will not allow a General and great Counseller to sleep all the Night, much less to take any part of the Day for it. And therefore this is thought to be David's first Error, and the occasion of his following Fall.

Which was plain after the manner, Deut. 22. 8.

To wit, in a Bath, which possibly was in her Garden; or in some room near to the King's Palace, where she might wash her self divers ways, and for different ends; either for health, or coolness, or to cleanse her self from some kind of legal Impurity: where also, the Windows being open, and she careless, David might espie her.