We spent two nights at Boutanga with our young sons (2.5 years and 4 months) and had a wonderful time. The park-like setting is beautiful and lovingly maintained, the bungalows are comfortable, chic, and private, and the meals were creative and delicious (with ingredients drawn largely from the garden). Most of all, as mentioned by other reviewers, the hospitality and thoughtfulness of the owners is really remarkable.
It's a wonderful place for children - plenty of green space to run around, a swing set, pool, toys, and thoughtful touches from the owners (like a packed sandwich, snacks, and small toy for our toddler when we left). Only catch is that the pool is not fenced.
Location: 15-20 minute drive from Marrakech, about 100 dirhams. Good base for day trips to Imlil/High Atlas - the owners arranged a mulitingual driver/guide for us, and this was the highlight of our trip. We were happy to have stayed in a riad in the medina for a few nights previously, but the peacefulness of Boutanga was hugely welcome. We would stay there again as a base for Marrakech.
Cons: A bit of a hike from Marrakech - we had some trouble finding a grand taxi in town to bring us back (but this was during to a rainstorm). Also, no doors to bathroom in our bungalow, so no privacy, and shower steam filled the whole room.
All told, a really lovely guest house with truly gracious hosts.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.