U: I'm taking a trip in cambridge and need a place to stay. I would like a 4 star in the moderate price range.

S: I have several guesthouse options for you.  What area of town are you interested in staying?

U: I don't have an area preference, but I would like to have free WiFi.

S: I would suggest a and b guest house would you like the info?

U: Do they provide customers with a clean bathroom?
S: According to the reviews I have on hand for that location, the bathrooms are not clean.  Sorry to disappoint!