WordNet (r) 3.0 (2006):

fleabag
    n 1: a run-down hotel

Moby Thesaurus II by Grady Ward, 1.0:

21 Moby Thesaurus words for "fleabag":
   boardinghouse, dorm, dormitory, doss house, flophouse, guest house,
   hospice, hostel, hostelry, hotel, inn, lodging house, ordinary,
   pension, posada, pub, public, public house, roadhouse,
   rooming house, tavern