same experience here I'm afraid.
We tend to donate to the local hospice as a first choice but they can be very
'picky' with some items - I guess they are constrained by various regs....?
We had some luck in finding a local residential charity where e.g. homeless, ex-cons. ,etc. re-furb. e.g. furniture , etc. and then sell on.
In doing so, they generate a small surplus whilst learning some trade skills

James