I'll start with the good: The room was perfectly decent and comfortable, air-conditioning worked great. The balcony was great to hang out on the cooler nights, and the living area was spacious. I didn't ever really speak to Mathias, everything was handled by a colleague. But the colleague was very nice and responsive to my messages (Spanish only though).
The bad: Still some things that are a work in progress. The shared bathroom wasn't great, the door didn't close properly, the sink tap doesn't turn off all the way, the toilet didn't flush when we arrived (though I think I fixed that), and you have to hold the shower head cause the wall fixture is loose. The kitchen was fine except there wasn't a working lighter for the stove, so we had to buy one.
Overall it wasn't a bad stay, but it wasn't great either. I trust the guys will get those things fixed up and make it more comfortable for guests in the future :)