Poor Batman, regulated to a freakin Best Western. The days of the Ritz Carlton, Four Seasons, W, etc. are long gone. Dick Grayson and Damien Wayne probably pissed away the fortune while Bruce has been gone trapped in in time. Poor Tim doesn't know about it since he has been out actually doing something productive with his time, like looking for Bruce.
Although, on the other-hand, it's probably a good hideout because even the Joker wouldn't stay at this dump.