I am planning on visiting Boston this September, probably arrive either the 17th or 18th and depart on the 24th or 25th. Will hopefully come by Amtrak, so I won't be using a car. I've checked several sites and cannot locate a hotel in Boston proper for under $200/night. I had hoped to book a room for, at most, $150/night or less. Is September a particularly busy month, should I pick another month? Thank you for any help you can offer.