Possible Clues:

• ... staying in one, maybe old men get sozzled
• Doddery old chaps going in to get accommodation
• Accommodation that brings Masons closer to Craft?
• Silly old gent - this person needs to get in accommodation
• Temporary residence Sir Oliver intended to mention
• Silly old people go in to receive cash deposit
• Physicist planned to surrender a position in enemy territory
• Porter's room intended, say, for deposit of monies
• Accommodate troops, given time - and a deposit!