I loved staying at Tom's place. It's a great deal for the price, given how expensive hotels in Cambridge can get. However, you're going to sacrifice some things for that price.
Yes, you'll have to cross about 3 ft of shared hallway to get to the bathroom. Yes, you may not have the best sound privacy with the neighbors upstairs. None of these things bothered me in the slightest, and I'm a single woman traveling on my own. In return you get very convenient, comfortable, and clean accommodations that will allow you to enjoy all the best things that Cambridge has to offer.