Hyde Park Corner is nice. Easy to get to everything. I'm beginning to sound like a broken record......have you thought about using priceline.com to book your hotel stay? There is an informed bidders website at www.biddingfortravel.com with a lot of information on winning bids, by location, and date from priceline users. I am only adding this here because you mentioned price. You could probably get a 5 star on priceline at your 4 star rate you were willing to pay. It requires a little research on your part, but it could save you a lot of money and you could get a better quality hotel. Just a thought.