I just checked the Harborside Hyatt website and the cheapest I could get the room for was $149 room only.
Then I found their Park and Fly rate and it was $199 plus tax.
So Priceline was about a $45 discount on the rate at their website.
A couple of reviews said this hotel is at the edge of the airport, kind of out of the way, with long waits/rides with the shuttles?? I've never seen this hotel so haven't got a clue.
Then out of curiousity, I checked out the Hilton Logan. Their lowest rate was $79 for just the room and then $199 for Park and Fly for maximum of 8 nights then $22 per night there after. The website said they have shuttles but that they are close enough to walk through the skywalk!! That would be very nice.
Just thought I'd share with others flying out of Logan!