Paty - You are just going to have to trust me about the things I chose to buy here in the US, that it was - in each case - the best decision for our use. We hired a local carpenter to make the majority of the furniture (plus windows and doors) and purchased the appliances, fixtures, bed and couch, and most of the larger kitchen and bath items on the lake or (mainly) in Xela.
Our house in the US has hundreds of Guatemala textile items, too, many dating back to our 1st visits in the 80s. Now that we're visiting 2-3 times/year and have a place of our own there, I'm striking the balance that is right for us between quality, cost, practicality, aesthetics, and honoring the local traditions and economy.
I looked in many stores in Guatemala for towels, for example, and did not see towels with even 50% cotton for less than $15-20 per towel. Sheets with any cotton content at all (and I really dislike the staticky, cheap sort with no cotton because they feel icky and pill quickly) were $50+/set. In the US I can get beautiful cotton sheets for $15-20/set at places like Ross and TJ Maxx and nice 100% cotton towels are easy to find for $5 or less. I am not very picky about most things but we are planning to live part time in Guatemala and don't want to spend hundreds of dollars on cheap stuff (no matter where it's made) when I can have items that will last for decades at a fraction of the cost.
There are beautiful bedspreads and textiles for tablecloths, curtains, etc., around the lake and except for the bedding, that's what we prefer. You can ask any woman who uses a lavadero or the lake for her laundry, though, and you'll find that it's just not that easy to wash huge things out by hand and dry them on a regular basis.
You've probably already tried this, but I just washed 2 wool bags a few weeks ago - soaked in cold water with Woolite, swished and swished and rinsed well in cold water, and blocked on towels. They look new!
It's a wonderful position to be in - lovely homes full of Guatemalan textiles and folk art in 2 countries. Feeling blessed. :-)
