Two bedrooms share a bathroom with a hobless shower, the same standard as the master, and a separate powder room sits apart from it entirely, a detail nobody clocks in a display home and everybody notices in a busy household by week two.
The master suite holds its own sense of separation: walk-in robe, ensuite with a hobless shower, with a further separate WC rather than one shared down the hall. Even the laundry gets a walk-in linen closet alongside its built-in recess.
Not more rooms than the household needs. Exactly the right ones, in exactly the right proportion.