Nice game and game idea! Fun and exciting indeed. Also challenging.
I would like to have more speed with the grab hook, because i would then have enough time to get to the other side with the hook. Then also having a pick/ drop as in the same button would be clear feature to have. Stuff could have more realistic physics too (heavy mass steel hook and the couches). I like the idea to stack objects and drop-off items to taken away by with the standing game mechanics.
The whole game is still a complete pack and playable, so you have a nice work. In this case music could be something different and some other levels added as in i.e. factories.