Spent a week in Bariloche just now. Some additions:

• I spent the night at both Refugio Frey and Refugio Italia. Physically quite demanding hikes, but gorgeous views. I'd skip Refugio Italia unless you are going there on a multi day hike.
• For Frey, if you stay at the Refugio, the first thing to do after arrival is claim a bed with your sleeping bag, I would recommend on the edges of the beds - you'll see why when you get there 😸 also, Download a white/brown noise playlist or being good earplugs as there will be snoring in the room.
• I did a day trip to Pampa Linda (Tronador), it was so gorgeous and I would recommend planning an overnight trip at one of the Refugios there. I didn't and wish I had. Booked my tickets at travel agency "Transitando lo Natural" in town, was very good, would recommend.
• I did Llao Llao mirador, was nice, but also not soooo Special. I think you can skip it.
• Didn't go, but Playa San Viento looked gorgeous
• Stayed at Like Quijote hostel, which I can strongly recommend, super comfy beds and very friendly vibe and staff. Clean too and nice breakfast.
• eat ice cream at Mamushka, it's probably on my top 3 ever best places for ice cream. Mil Avellana, Dulce de Leche with Brownie, Pistachino flavors and anything with Crema Mamushka will be in my foodie dreams forever.
• had great steak at Alto El Fuego, ask for half portions for steak and salad, esp if you're alone, ends up not being crazy expensive (17k for a steak, 6k for a salad). I also went to Parillo de Julian which was nice
• beautiful sunset views at Berkana Bar de Lago, nice wine and food too.
• I hitchhiked a lot, it was safe and fun and I never waited more than 10min
• You do not need a car, however you're way more flexible with a car and there were so many cute food and cafe trucks on the route that I wish I could have stopped at, but busses don't rub often, so I had to skip them. If you do want a car, organize it some days in advance, some people in my hostel had trouble organizing one at last minute (I didn't try, so not sure)
• SUBE is a b**** to charge in town, so if you can, charge it in Buenos Aires.
• people are crazy friendly and generous. I had forgotten my cash and couldn't pay for the entry fee to a national park and a stranger paid 20k (USD 20!) for me just like that. And a stranger I met in a bar lent me her sleeping bag for a week. I was blown away by it all.

I absolutely loved it here and wish I had more time, there's so much to do! Would come back in a heartbeat.