A container without a drainage hole can be used as a cover, with the plant growing in a separate inner pot. That makes it possible to remove the plant for watering and check whether water has collected beneath it.
Choose an inner pot that fits without becoming jammed. You should be able to lift it out once the plant has grown, not only on the day you arrange the display.
Make inspection easy
After watering, let excess water drain before returning the inner pot. Check the bottom of the cover rather than assuming a small amount of runoff will disappear harmlessly.
Do not bury the nursery pot in loose decorative material that hides trapped water or makes it impossible to remove. A tidy-looking top should not prevent access to the roots and drainage.
If the display stands outdoors, account for rainfall as well as water you add yourself. A cover with no outlet can collect every shower. Where regular inspection is impractical, use a container arrangement that drains freely. The pot's appearance and the plant's growing requirements both need a place in the design.
The RHS houseplant guide recommends drainage holes, thorough draining and removal of collected water after watering. A decorative outer container should not prevent those checks.
Related reading: Plant Pot Materials Compared: Drainage and Moisture.