My own reservation was for 1 night, but I stayed 4 more nights through another family member's reservation. So this review is based on my experience of 5 nights in 2 different rooms.
A charming, clean, comfortable hotel with delicious breakfast included. Decorated with local art - sculptures, weavings, etc. Location is not in the heart of the tourist area but felt safe and easily walkable to our destinations within 5-30 minutes. Specifics...
Rooms: Small but well-appointed. Firm double bed. Good luggage storage. Outlets & light controls on both sides of the bed. Bathroom (toilet, sink, shower) has reliable water pressure & hot water. A bottle of filtered drinking water is provided, which you refill from their filtered jug in the lobby.
Breakfast: Rooms open onto courtyard with local plants & art. Outside each room is your own breakfast table. Just go to your table from 7:30-10:30am & a server comes to offer coffee, fresh cut fruit, OJ & a selection of breads. Choose from 2 typical Oaxacan breakfast dishes available that day. Adjust if needed, eg meatless.
Staff: Friendly, comfortable with English, accommodating to any needs, such as calling a taxi. (From the airport you take the "colectivo" van with other people for ~120 pesos, but it doesn't go back to the airport. My return taxi arrived on time & charged the fixed airport trip price of 280 pesos, paid in cash)
Other: There's a nice adjacent coffee shop if you want a drink or snack later in the day if you're nearby.