Not sure which area you live, but have you tried the Buy Nothing groups that serve your area on Facebook? There are groups for Mid-Levels, Southside, Kowloon etc. You can take pictures and gauge response pretty quickly. Smaller furniture items (like chairs, lamps) may be easier to get rid of this way.
Another option is, if there is a WhatsApp or Facebook group for your building, to post a message that you are giving stuff away. If distance is short (up or down in a building lift), it might go easier. This is how we got rid of our old TV.
When we renovated we had the most luck in giving stuff away in our building estate and also selling items on Carousel and Facebook Marketplace for cheap, but we had a month and were prepared for no-shows and scheduling hassles. Unsurprisingly we could not get rid of the largest items (sofa, dining table, TV console) so ultimately we had to haul them to the neighborhood dump late at night.