We had a lovely stay at the beach shack. It is quite small but the description does say it's compact. It has everything you could need on a small scale. The bed has to be one of the most comfortable beds I have ever slept in!
The walk along the beach into the centre of Byron is lovely. It does take around 20 -25 mins to walk depending on how fast you walk.
The only downside of the shack is you can hear everything the people upstairs are doing. The walls are paper thin so if your a light sleeper then your sleep could be disturbed.
The surrounding area where the shack is located is beautiful. It is like being in Bali!
The price is very reasonable for what can be an expensive place to stay.
I would recommend a stay here. Just be mindful there could be noise from the guests above.