Matthew Poole and continuators on Acts 10:9

9 ¶ On the morrow as they went on their journey, and drew nigh unto the city, Peter went up upon the house-top to pray, about the sixth hour.

These houses were flat on the tops, and therefore they were commanded to make battlements for them, Deut. 22.8. Peter went on the house-top to pray, that he might from thence view the Temple, which was a type of Christ, through whom onely, we and our prayers can be acceptable unto God; hence 1 Kings 8.30, &c. there is so often mention made of praying towards the City, and towards the place which God should chuse; this Daniel practised, tho upon the hazard of his life, when both City and Temple were ruined, Dan. 6.10.

The sixth hour with them is high-noon, or mid-day, and is accounted one of the three times of prayer, (see Chap. 3.1.) and was as the Iews say, recommended to them by Isaac; howsoever it was the time when they might begin to prepare the evening-Sacrifice; none of these causes need to be assigned, for doubtless this blessed Apostle did watch unto prayer, 1 Pet. 4.7. and desirously laid hold upon all opportunities to pour out his Soul unto God.