Good only if you're looking for a cheap place where to sleep and keep your things in central London.
Rooms are tiny, old, essential in furniture. No hairdryer. Bed uncomfortable, and noisy. My room was next to the elevator and the door would not close shut. I could hear people talking in the corridors all the time. I had no lavatory in my room only shower and a sink!
Poor breakfast. There's not even fresh fruit.
The hotel staff could hardly understand what I was saying and the Russian lady at the front desk welcomed me with a: "Can you please wait in the lounge? I will call you", like I was at the doctor or something.
Not really what I expected.

This is a nice place for if you're only here to sleep.
The rooms are simple, small bathroom, the breakfast is simple, but eatable.

the people from the reception are friendly.

don't go here if you only want luxury.

The hotel was fine - not great, but adequate considering the price. The absolutel best thing about the hotel was the location. It's less than 5 minutes walk to Paddington Station, which will get you easily to most of the major tourist spots in London. It's also minutes from Hyde Park and close to many restaurants and a number of small grocery/convenience stores.
The room was fairly small and the beds were not terribly comfortable but were fine for the few days we were there. The room was clean and the bathroom had been partially refinished (new tile, toilet and sink) and was small but clean. There was no air conditioning, and our room overlooked a busy street so it was a bit noisy at night. All of these things should be considered if you're planning to stay here. But for the low price, we could endure these things. The elevator was small but adequate (large enough for 2 people and 2 suitcases). Breakfast was in an incredibly hot, cramped room in the basement and consisted of cereal, toast coffee/tea and warm juice. We tried it once, but chose to get something at a nearby grocery store the other days. Again, if you're expecting a great breakfast for your money, this isn't the place for you.
The staff were friendly and helpful and they happily stored our luggage in a locked room until our room was ready. We had prepaid the room, but they did ask for a 10 pound "deposit" which was put on our credit card as a hold. I had no problem with this and it was never actually taken off our card at the end of our trip.
Overall, this was a very basic hotel - small, a bit dingy (needing some updating - particularly in the common areas) but the room was clean and adequate for the short period of time we spent there each day. However, if you expect any kind of luxury, this is not the hotel for you. If you're on a tight budget but looking for something more private than a hostel, I would recommend this hotel.

we saw the pics online and it sounded good. when we arrived they han not received our booking. so the indian guy at the counter charged us about 100 usd to hold a room. we paid on card, they said theyd not run it, they did immediately. when we looked at the room it had no air conditioning and it was rather warm. A tiny fan sat on a table. there were three amy cots in the middle of this really ugly room. they obviously had no mattress. my lady said NO WAY and we went to another without spending more than a minute in. this prince william hotel was a hotel we paid for and they stated that when they did get our money that theyd keep two days of it and refund the rest....yea, right. theres a sign posted right there in the office in front of the jerk that talked to us saying theyd only charge us for one day. DONT ever go there. We called Cheapoair and theyve not called us back, but i noticed this hotel no longer come up on the search engine on their we site. We ended up getting a normal hotel at the airport.