If there is any single service I'd avoid on AWS it's Lightsail, it'll cost you a lot more than almost anything out there, is slow as molasses (even tiny services can need tens of minutes to deploy) and you'll experience random failures not even AWS reps can explain to you. Avoid at all costs.
It's a ghost of its former self, but I'd probably still rather use Heroku today than being forced to use Lightsail even once again.
I have only use lightsail for one project with two VPSs, but it just works like a VPS (two, because we have another for staging). Price is competitive.
Its not my favourite, but its not terrible.
>Lightsail, it'll cost you a lot more than almost anything out there,
Lightsail is pretty competitive (price wise) with other providers. Been running s B2B app on it for a few years now - nothing much, just your basic crud app running on lightsail instance + lightsail db. Nice to have a "monthly" rate on each instead of the EC2 opaque (and "surprise!") pricing.