Review for Rivers Casino Philadelphia Review For Mystic Lake Casino Hotel Google User Oct 28 '17 at 23:35 My guest and I used the valet service and was immediately greeted by smiling, welcoming staff. Upon entering the hotel lobby I noticed the lively atmosphere. People walking, sitting by the fire checking in. The lobby was clean, the staff, again, courteous and friendly. We enjoyed our visit to Mystic and will definitely be back again. View full site to comment or like