The room numbers are those referred to on the pompeiiinpictures pages for VI.16.15, VI.16.16 and VI.16.17.
They are based on the plan and room descriptions in the Notizie degli Scavi di Antichità, 1908, p. 53ff, fig. 1.
They are also those used on the Pompeian Households online companion by P. M. Allison.
See http://www.stoa.org/projects/ph/rooms?houseid=22. on Archive.org Wayback Machine
This plan is to help you accurately locate the rooms shown in the photographs of these houses.
The plan shows the entrances at VI.16.15, VI.16.16 and VI.16.17.
Please be aware that the room numbers shown may differ from any other plans or records both published and unpublished.