Whatever is being read here here should be contextualized - Minca is basically a village known for eco-tourism. So you can't really expect luxury. In any case, the room we had was very nice and spacious. We were located right next to the reception area, so we had Wifi but I know that other rooms do not get it. Room, Service and People are all 5 stars, especially given the area.
The is big plus/minus = Location. Sweet Harmony is located around 20 mins walk from the village central square. On the one hand, you have your own little jungle type feel because of the isolation, which I will say is pretty cool (The river is located right below the lodge and you can hear the stream loud and clear- Its very nice) BUT, you always have to walk for 20 mins to the centre(The path maybe slushy during rainy season) or take a bike-taxi (USD $2). But overall Minca is a low-key place, so if you are staying for long, 20 mins wont make a huge difference.
But overall the place is nice, rooms are good and staff is great.