Possible Clues:

• Invites to the penthouse
• Receives at one's roof garden
• Invites to the skybox
• Welcomes to the treehouse
• Entertains at the penthouse
• Hosts, as at a penthouse
• Hosts in one's apartment (remember that?)
• Invites for a nightcap, maybe
• Welcomes to one's apartment
• Hosts in the penthouse