A real disappointment
My husband and I stayed at the Omni Parker House for a long weekend and were so disappointed with this hotel. We booked using Priceline and what a huge mistake. We've always agreed with Pricelines interpretation of 5 star, 4 star, etc. But not this time. What a joke! As many others have noted on here, the rooms are not only small, they're rediculously small. To make matters worse, my husband had a broken leg, so had a cast and there was no way he'd be able to sleep in the full sized bed, as it was pushed up again the wall and using his crutches was a real challenge in that room. I called down to the front desk and asked if there was any way we could get a room that could accomodate someone in crutches. I was told they were completely booked and nothing could be done. The hotel didn't appear full, so I called the hotel directly on my cellphone and was told they DID have rooms available. Hmm... so I called back down and explained that when I called the reservation line, was told there were rooms available. I then got the sales pitch that others have posted on here also received----they could upgrade us for $50/night. The response was literally VERBATIM from what others have posted on here. They must have a script for the complaints from the Priceline users. My husband finally took over the call and was finally able to get us moved to a room that could accomodate someone with crutches without us having to pay the $50/night. Very disappointing that we were lied to about the hotel being full and that we had to go through THAT much frustration to get a room that could accomodate someone with a broken leg! We literally wasted 1 hour dealing with that. A real 4 star hotel would have never put their guests through that hassle. 
The room we finally received was small, but at least two people could move in it without one person having to sit on the bed. And, my husband could get in/out of the bed with his cast. The hotel needs some repair...the ceiling plaster was coming down in our bathroom and the walls are really, REALLY thin. During our stay, the police arrived at 1am to escort some young ladies from a guest room near us that were hysterically crying. Again, not what you'd expect from a 4 star.
The beds were comfortable, free internet (if you sign up for the loyalty program) and the location is fantastic. Right on the Freedom Trail
I wouldn't use caution if using Priceline to book a hotel in Boston, as it appears this one is awarded frequently. Probably the only way they can fill the tiny, tiny rooms. Not all rooms are small though. If you're willing to pay the full price, you could get a regular sized room. But, it's not worth the gamble and there are LOTS of other hotels in the area that are simply fabulous. We won't stay here again.