Making a relaxing LEGO tub
Both of these designs use the same faucet piece and legs can be easily attached beneath, the issue with most of these designs is that parts are mostly in white as those parts are more common than gold. If you are set on the colour you will be fairly limited in terms of pieces but there are some ways to change the colour of bricks with some limitations.
This design by Elspeth De Montes uses the (Studs not on top) techniques to get that smooth look without any exposed studs on the top. It uses a 1 x 2 x 5 brick

This design by Ryan Smith has a similar shape but with studs on top.

You might find more relevant designs by searching on Flickr rather Google images for example.