Lawn mower

Our garden consists of beds, mulched areas and non maintained lawn. We're cutting the areas sometimes with a scythe, but it looks not at all like a lawn.
I am planning top have some areas in the garden with a neat short mown lawn, that is around the house (maybe two meters) in the entrance two meters wide too and maybe one or the other
are too. That means we need a lawnmower. I don't really like petrol mowers because they stink and need maintenance.
I think of either and electric one, but we would really need a long extension cord because our garden is big or a manual one, because the patches are quite small.
Like everything electric you buy these days, I reckon that the lawnmowers too are crappy and last for 5 years longest. How about a manual one are there decent models (available in Australia)?
How difficult is the maintenance of these (keeping the blades really sharp)?
I think I 'll have to borrow a petrol mower first to convert the more wild meadow in something short.

I have been using a Fiskars for two seasons and it is very durable thus far. When I was shopping around there were a few other more expensive options that looked better, but I got this one local so I could put it through its paces and return it for a refund if needed.

I would definitely get the type where the blade is not actually sharp. In this one the blades are machined in such a way that they don't touch the mower as they spin, they just move very closely and snap the grass. I had one with sharp blades and once it was dull there was no way to sharpen if effectively.

Thanks! Fiskars has good tools I will look into that hopefully they are available here. The information on the non sharp mowers was great! I cannot really sharpen anything...
How big is the lawn you are cutting?

Unfortunately I have to keep about 3-5 k square feet of lawn as I am renting right now. it is about the max space I would ever even consider doing. I do enjoy mowing over and over and since this mower throws clippings forward you recut a lot of the longer ones once you are on a roll. Just by using this rather than other mowers I think the grasses and plants thrive. There's organic material mulches in for bugs to hang out in. Then the chickens come through. The lawn is greener than the people around me paying to have trugreen spray poison on theirs.

I couldn't tell exactly how large of an area you are needing to mow, but if it's only a few square meters you might find that mowing it with a rechargeable electric weed whacker/ trimmer is the more efficient way to go.