Do you mean a vessel sink? I wouldn't care what kind of sink I had in the laundry room, just as long as I had one (which I don't but wish I did).

I only have a 200mm cabinet for the sink to sit into and I can't find any 200mm wide sinks to fit.

200mm is less than 8". I can't imagine getting any sink--drop in or vessel to work.

We hardly use it actually but want to keep it there more for resale I guess.

So you already have/ had a sink? New appliances that are larger than the old ones?

I think it would be weird and rather unhelpful; I would do without one rather than have a countertop (vessel) sink.

"I would do without one rather than have a countertop (vessel) sink."

Agree with this; actually that goes for any laundry sink that is only 8". What purpose would it serve other than washing hands or soaking small items like underwear or bras?

Could you have mistyped your measurement? Or can you give us a picture of what you currently have? I would want any sort of sink I could get in my laundry, but 8” is impossible. This was discussed here at some length about 2-3 years ago, but I cannot find the thread. The consensus, IIRC, was that even a bar sink with a pullout faucet could be used to fill a bucket, thin down fabric softener, or add water to the washer.

This is the type of sink I'm thinking of. I have found one that is 200mm wide and I have given up on the countertop sink (vessel)

yes it's small, but it is honestly all I need.

Here is the one I am buying

Wow, cool. I couldn't imagine it, but I can see how that fit.

I still just really don't see what the purpose of such a tiny sink is -- why would it be helpful?

Interesting. A sink of that size is better than no sink, but it does limit what it can be used for. The average sized bucket would not fit in it. But you could still use it to rinse out rags used in gardening or other activities. I would never be without a sink in the laundry room because we do our own gardening and I wash our vehicles and we are always doing things around the house. But the location of the sink makes a difference. Our LR is near the garage, so it is a natural flow. If the LR was on another level, or on the other side of the house for example, the sink then would not be as useful.

It would be very useful if your water heater is not very close to the washer. Ours is a good distance away, so I always use our small 14 in. x 15 in. laundry room countertop sink to prime the HOT water supply before I start a load of laundry. So for that reason alone, it might be a good idea.

You found one! I didn't think it was do-able.

I like it. Get get a faucet with a pull-out sprayer, To make it easier to fill a dishpan if something needs to soak, or a pail if this is also your cleaning-products room.

What I really want is a concrete double utility sink somewhere.

"I still just really don't see what the purpose of such a tiny sink is -- why would it be helpful?"

Mostly I can see it to fill a bucket/basin for pre-soaking (sprayer hose faucet), or for washing hands. I only have a laundry closet, but it's next to the bathroom and that's what I use the sink there for (laundry related). And, if you placed a flat board on top, it could double as a bit of counter space.

I would consider stacking the machines to allow space for a larger sink if that were an option. But that sacrifices counter space. A board over a sink technically works, but who wants to move a board with dirty hands plus all the constant shuffling. Well, at least the stainless jobbie depicted is a better option than a vessel sink -- but still not much of an option IMO. OP mentioned they hardly use it, thinking about resale --> this is not going to make a break a sale.

"but who wants to move a board with dirty hands plus all the constant shuffling."

No one WANTS to, but we do it anyway. I don't want to wear a bra either, but that's what my life requires ;)

I think it is awesome. With a tall, pullout faucet, it would handle 90% of my laundry sink needs.

Eh, to each his own -- I personally think it is relatively useless. Anyway, OP's original question was re: vessel sink, which they decided against mid-thread. And I stand behind my remark re: is not going to make or break a sale.