Hi. Sorry, I just saw your question. This vanity is 6'8" long and 21" deep, which is what we needed for our space. For a single sink, 2'6 to 3' long would give you some counter space on each side of the sink and 20-21" would probably be the minimum depth; normal bathroom counters are about 24" deep. Hope this helps.
Thanks.
~ Julie

For height you can use your kitchen counter height or bathroom counter height.
Kitchen counters are a little taller. Our vanity is about kitchen height just because that is how tall it was.
Thanks.
~ Julie

I really love what you have done here, it's totally what my husband & I like doing too, great to see a piece of furniture used in a new way...thanks,,,

What finish do you have for toilet paper holder and towelbar or ring

Chrome faucets and toilet paper holder. Opted not to install a towel bar or ring. Thanks for your interest in our vanity.