I use a reel mower on a 1/5 acre lawn, I used to use it on my townhouse lawn. It's great, I'd never buy a gas powered mower and I wouldn't use an electric unless I had solar panels (in which case it would be one of my first purchases

). You
must mow every week, or you'll end up mowing the whole lawn twice in order to cut it all. Sharpening the blades is easy peasy and I do it about twice a year.
Highly recommended. I was mowing a few weeks ago while my neighbor was playing with his daughter in his back yard, if I had a gas powered mower he would have had to go in. It's a bit of a workout, but no problem. I've had mine for about 7 years now.
It's a big pain if you let the grass grow long and seed. Those long sprouts don't get cut by the lawnmower unless you rip 'em lower.
The scissor cutting action is supposedly better for the grass. Mine is a Deluxe Light 18" model from
American Lawnmowers look 'em up! Made in USA!
I love using Phil Power to mow my lawn instead of (direct or indirect) fossil fuels.