Valencia is nice. I'm not sure about rentals there. Airbnb is expensive and geared towards tourists mostly. We got lucky as my girlfriend has a lot of friends here and one of them was moving to Australia so we leased directly from her. But check out some of the Facebook apartment pages for each city. I think there is one for most cities in Spain. Madrid and Barcelona are very expensive for rentals because a lot of tourists there.
I'm not sure where you are looking at Coleman coolers for $1080? That is too expensive. You can go on Mercado Libre and find some 100 qt coolers for 553,000 pesos.
Hecha en pvc. | Capacidad para 160 latas. | Capacidad para 90 botellas. | Dimensiones: 15.24cm de alto x 46.9m de ancho x 95.2m de largo. | Con ruedas.
www.mercadolibre.com.ar
People and culture are excellent. Safe too. No cons at all so far. Some cities have some anti-tourist sentiment but it is only a few people that are causing issues.
You can get a digital nomad visa here and pay 15% reduced taxes. I haven't had to file taxes yet. I work remote so I need to see what the cheapest option is but my accountant before moving here told me applying for a digital nomad visa and paying 15% would be the most efficient. My girlfriend has a Spanish passport. She works online but she works under the don't ask don't tell when it comes to taxes. In Argentina she was working remote and was declaring a small portion of it.