Powder rooms, also known as half-baths, are rooms with a vanity/sink and a toilet, and usually no shower or tub. They are practical spaces for larger homes and apartments, but they are often seen as just that practical.
INTERIOR AMMM by architecture, via Behance - Narrow vanity alongside the tub. This is what we have only our sink is centered (way too close to the toilet). I was having trouble finding images of off center sinks in this configuration.
Make the most out of small bathroom spaces like using the HEMNES sink cabinet, shelf and mirror cabinet to stay organized in style. This is hy far my favorite line at Ikea, and I like the sink and mirror for both of the bathrooms.