I stayed for one night with my husband and 18 year-old son. The motel is on the south side of Greymouth and it's a bit of a drive in to town (or a cycle, whatever).
The room was clean an comfortable. We had a one-bedroom unit with an extra bed in the living room. It works well. The room was very clean and some of the fixtures were a bit dated but that adds to the charm. Yes, the stainless steel in the room was spectacular! I don't know how they do it but it was sparkling.
The motel is literally a minute from a spectacular beach. It's an incredibly long beach and there seems to be a cycle track along it that you can take to Greymouth if you have a bike.
The owner (sorry - terrible with names) was really helpful and friendly. We were driving on to Nelson after our stay in Greymouth. She told us to forget the Google maps route and take the road north from Greymouth. Listen to this lady, people. She knows what she's talking about. It was a fantastic route

We originally booked a tent site at the Kiwi holiday park, but torrential rain/storm scared the life out of us. Thankfully there was a cabin available and we were able to upgrade (simply paying the difference). Linda was extremely friendly and gave us great tips about the area! The room itself was clean and very big. The bathrooms were situated in a separate block, also very clean and well kept. Loved our stay!

We arrived mid evening a bit disorganised, as we hadn't properly read the details of the cabin we'd booked, and assumed that bedding was provided because our next stop that was part of the same group did provide bedding.
When we realised our mistake, I went to try to hire bedding, however we were provided with it at no extra charge, even though it was our mistake.
That friendly service at the end of a long day on the road is what would have me staying there again.
I couldn't get the free wifi to work, however we were there to sleep, and go for a walk at the beach, and this we achieved to great satisfaction.
The two minute walk to the beach made for some pleasant exploring.
Bear in mind though that it's a substantial distance to the centre of Greymouth, so you probably won't want to walk that distance, and need to allow a few minutes even in the car.