Location. This Portland hotel is four blocks from Pioneer Place Mall and Pioneer Courthouse. O'Bryant Square and Powell's City of Books are within one-quarter mile. Hotel Features. The Sentinel, renovated in March 2014, has a fitness facility, a restaurant, a bar/lounge, and a coffee shop/café. Room service is offered 24 hours a day. The hotel's 22,000 square feet of meeting facilities include 9 meeting rooms. Valet parking is available at this Portland hotel. This is a smoke-free property (fines may apply for violations). Guestrooms. Accommodations at Sentinel include bathrobes and coffee/tea makers. Business-friendly amenities include multi-line phones, desks, and voice mail.