I spent 2020 in Bariloche. Well, about 6 months there, and 6 months 20 min away in Dina Huapi. There is a fiber optic line in town, but I had trouble tracking down an apartment or house that had it (renting).
I believe I was able to get 12 mbps, though the slow latency to the United States made one of my two remote jobs impossible. I adjusted to the additional delay on calls for my other gig. The 4g was pretty similar to US 4g, so I was able to use my hotspot when internet slowed or stopped.If I went back, I'd look into Starlink, but Im not sure that's an option yet (I think i saw a thread of on BAexpats once). Zoom meetings worked, but resolution drops and the aforementioned one second delay. My use of a VPN didn't help matters.
We lost electricity in Dina Huapi about 10 times in 6 months, but for never more than 6 hours, and it averaged closer to 2 hours an outage.
Lots of tourists prior to March shutdown. There are upsides to that, but it's quite crowded in summer. I felt safe when there were tourists, as well as during lock down when there were none. I found the customer service at retail and restaurants better than the few weeks I've spent in BsAs. All in all, I was treated pretty well, no significant issues with people trying to get over on me. I do speak fluent Spanish, and my girlfriend is Argentine (not from BRC).
Let me know if you have questions. Lovely place. I look forward to returning one day.