You can always negotiate. When I did nomading I regularly only booked on or two days with booking and then asked for a deal for one or two more weeks if I liked

You can always negotiate. When I did nomading I regularly only booked on or two days with booking and then asked for a deal for one or two more weeks if I liked the place. At least the 15% or so fee from booking portals are easily waved. If you are off season and the hotel is empty anyway they often are happy to go even further.