Looked at Sydney hotel prices [anyone know why Australian hotels are so expensive for what you get ?] read the Trip Advisor reviews on this one and booked on their web site.
Great to deal with, very friendly - room was fairly small but very clean & comfortable - really good value for money.
There's a full laundry room downstairs with washer, drier & iron - $3 each machine & iron is free.
Can park at the Mercur if like us you have a rental car.
Excellent breakfast at Wake Up ! - a little coffee bar just beyond the place where the buses stop, fresh fruit, yogurt & great coffee, and good Italian food for dinner at Sopranos, just east of the station..
Recomended to anyone who wants somewhere convenient & very good value in Sydney...

we were looking for a cheap place but not a hostel and this worked out great. located a bit south of the harbour but certainly within walking distance, maybe 30-40mins? its right off the main streets so as you walk to the harbour there is plenty of shopping and cafes to keep you busy, or you can take a 3min walk to the central train station and go from there.

the rooms are small, but get it done. a bathroom with shower, toilet, full size bed, and little 20" lcd tv with several channels. this is not really the place to stay for lounging, more like somewhere to just put your stuff in and sleep.

while we were there, the a/c was pretty noisey, but a call to the front desk seemed to get it working better. overall there seemed to be lack of air circulation since our wet clothes (bathing suits) never seemed to beable and dry inside the room.

the rooms themselves seem secure, you need to card access the lobby at night, then card access in the elevator to get to your floor, so that gave a safe feeling. in your room, you could definetely hear ppl in the hallways through your door, but the walls seemed to insulate, once noisey ppl went into their rooms and shut their doors you could never hear them.

if youre looking for a cheap, clean, safe place and not too worried about being further from the harbour action, this is the place for you.

It was ok. Room was clean and tidy. Staff were friendly. Good for holiday, but not good for business as the wireless internet was expensive and there was no iron in the room. It's very close to the train station which is handy, but there are a few dodgy people around the area at night.

This hotel is an excellent value in central sydney... I paid just over US$100/night but the place was spotlessly clean, completely new, great sunshine in the room (with drapes open) and quiet. I am a business traveler and am very particular, and I can wholeheartedly recommend this hotel to business or pleasure travelers. I must say that it is NOT in the center of the CBD, but a short bus/taxi ride or a 20 minute walk. Please note that there is an early (and strict) check out time of 10am, and there is no luggage storage (although exceptions can be made, it seems). Also, the internet charge in the hotel is high (as is the rest of Sydney) - try Boingo instead, and save a lot. Barbara, who works at the front desk, is very kind and helpful.