We used to have one when we first moved in here as we just could not afford a powered one. They are okay if you keep on top of the grass. A bit hard going if you let the grass grow to long.
Agreed.

They are actually pretty easy to use if the grass isn't super thick or super long. Much smaller and easier to manouver than a big petrol powered mower. We have one to do the courtyard in our unit, about three times the size of what you are talking about. $60 ish from Bunnings.

HTH