Quite a basic hotel, with average rooms, but an excellent location. It is close to Circular Key and Darling Harbour which are both within easy walking distance.
We arrived in Sydney tired and jetlagged after a night flight from Bangkok. We got to the Wynyard at around breakfast time. Unfortunately we had to wait several hours before we could get into our room for a much needed nap. We sat in the lounge where there is a tv and 3 computers for internet access. The lounge is right in the reception which overlooks a busy street so we watched the hustle and bustle of the locals making their way to work. Next to the reception is the breakfast room. We had breakfast here every morning, there was a good selection of cooked and continental breakfast as well as cereal and fruit.
The rooms were very long and as well as a bed and bathroom, had a kitchen area and a lounge area. The complimentary tea, coffee and sugar was replenished every day too. Staff are very happy to help and answered our questions for us (apart from the man I baffled by talking about koalas to).
We happened to use the laundry room at this hotel, which is on the top floor. Before you go all the way up there make sure you have coins and buy some washing powder from reception otherwise you'll be up and down in the lifts. The gym is also up on this floor but we investigated the vending machines instead ;-)
The best thing about this hotel though is the location, it is a short walk to Darling Harbour in one direction and an equally short walk to Circular Quay in the other direction. The hotel is an even shorter walk to the nearest train station.