I went to a less-touristy Blue Lagoon alternative recommended by locals in Iceland. It was the most awkward experience of my trip.

"Most foreigners know about the Blue Lagoon, and of course, it's very nice, but it is kind of pricey, and a lot of tourists go there," Helgi Gunnlaugsson, a sociology professor at the University of Iceland, told Insider. "Instead of the Blue Lagoon, I would just recommend the public swimming pools in Reykjavik. I go to the sauna. There are nice hot tubs here, and it's actually with the locals."

Icelandic tour guide Davíð Geir Jónasson, owner of Vík Expeditions, agreed.

"People come to Iceland and come to the Blue Lagoon and all that, but the swimming pools are absolutely amazing," he said. "Every proper town in Iceland has a swimming pool. The swimming pool itself is heated, with a sauna and a hot tub. You go there and meet people and chat with them. In Britain you go to the pub, in Iceland you go to the swimming pool."

The pool is located about a 15-minute drive from Iceland's famous Rainbow Street.

Of its 20 reviews on TripAdvisor, 15 users rated it "excellent" and five rated it "very good."

"One of the best pools in Reykjavík. Why go to the Blue Lagoon and pay $75 or more?" one user wrote.

Another user described it as having a "very Icelandic atmosphere."

I got lucky and snagged a spot just as another car was pulling out of the parking lot.

After I paid for my visit, I received a receipt with a barcode that I had to scan to open the doors to the locker room.

Iceland has consistently been ranked the safest country in the world by the Global Peace Index, so it appeared that locals felt comfortable leaving their shoes unattended. However, as someone who lives in New York City, I felt less trusting of the public. I decided to keep my shoes inside my locker.

I noticed other indications of Iceland's safety throughout my trip, such as an unstaffed "honesty bar" at a hotel and unlocked cosmetics in stores.

The locker room and pool at Árbæjarlaug were among the few places in Iceland where I didn't hear any English and actually overheard locals speaking Icelandic. (The other place this happened was at Costco.) I got the sense that I was the only tourist there.

I felt both excited about experiencing everyday life in Iceland like a local, and a bit of apprehension, like I was infiltrating a secret club.

Jónasson had described the social, pub-like atmosphere of local pools, and I saw it for myself: Árbæjarlaug was full of people chatting with each other in Icelandic.

Since the weather was in the 50s that day, I appreciated the option of swimming inside, even though the pool was heated. The Blue Lagoon only features outdoor swimming areas.

I immediately transferred myself to one of the hot tubs to warm up. The surroundings weren't as scenic as the Blue Lagoon's milky blue waters and black volcanic rock, but it was still relaxing and pleasant on a cool, windy day.

Unlike the Blue Lagoon, where photography and selfies are the norm, I immediately stood out by taking pictures of my surroundings. When the lifeguard spoke to me in English, I knew the jig was up and I'd been exposed as a tourist.

While I enjoyed getting a glimpse into the way Icelandic locals spend their weekends, and was impressed with the variety of pools and activities at an affordable price, I felt self-conscious as the only foreigner and ended up violating some unspoken pool etiquette.

Ultimately, the Blue Lagoon is geared towards tourists like me, so I had a more comfortable experience there. I preferred the anonymity the attraction granted me as just another person taking selfies. Plus, it was more spacious and luxurious with perks like face masks and swim-up bars, even though they came with a higher price tag.

Next time I ask someone to recommend their favorite non-touristy spot in a country where I'm a tourist, I'd accompany the local who frequents it instead of going alone. That way, they could help me navigate the language barrier and cultural norms that made me feel out of place at Árbæjarlaug.