We just had a fantastic stay at Andrea's house in Nago.
House: The house is well appointed and as advertised. We ate frequently at the house and it had all the dishes/silverware to comfortably eat with a family. The house is big with plenty of open space. We enjoyed sitting on the balconies and listening to the church bells. Both balconies have what I would describe as a "pocket view". Beautiful, enjoyable but not expansive (not a negative). The master bedroom (upstairs) doesn't have a door which wasn't an issue for us but could be depending on the composition of your group. The "bike room" just off the entrance was a nice touch to store all our gear.
Location: Nago was great. It is a relatively quiet alternative to Torbole or Riva del Garda. It was easy to get to Torbole for activities/food but Nago provided a quiet place to sleep and relax. We mainly rode bikes from Nago to Torbole which includes about a 200m climb home-a good way to work off dinner. We were in the area to ride road bikes and found the riding better than expected and indeed world class. It was awesome! There is lots of mountain biking, windsurfing and kitesurfing as well as hiking and other mountain sports.
The house is off a small street through Nago. Free parking was about 50m away and while that parking area is small we never had an issue finding a spot. Also a very short walk away are a couple of cafes, grocery store, market, park and restaurants.
We traveled with a 2 year old and found lots of kid-friendly activities along the lakefront; parks, playgrounds, beaches, cafes, trampolines, bike trails.
I would also recommend a trip up the funivia in Masceline. It is pricy and not something we would normally do but it was a good way to get in the mountains with a toddler and we found it was actually awesome. With good weather it was gorgeous and in the afternoon it wasn't too badly overrun with people.
Host: Overall, great. After a last minute change Andrea met us outside the house at midnight to let us in. He had local knowledge to pass and advice on local restaurants. Additionally, he contacted us during our stay to check-in and provide info on a local market.