You can't beat the location.
The shady garden patio provides a quiet haven behind adobe walls, and gives you a view of the snow-capped mountains of the Ski Valley and the gentler Sun Mountain of Santa Fe's Museum Hill. Underground parking means your car is always at the ready for jaunts to the Farmer's Market, Ten Thousand Waves Spa, Ski Santa Fe, or the Opera, or for day trips to Bandelier Monument, Los Alamos, or Taos. But you may just want to keep your car parked for days---there are so many magical places within walking distance. It is possible to come without a car and spend your entire trip walking the historic Plaza area, or to rent a car just for a few days of trips to spots such as Acoma Pueblo, Taos, and the historic mining town--now arts town--Madrid.
El Corazon de Santa Fe has an on-site exercise center in the Clubhouse, and a garden area with a community grill. The property is quiet and secure, in the heart of downtown, in easy walking distance to museums, restaurants, coffee shops, shopping, historic sites, and performing arts.
A note on the layout: Casita Cynthia is licensed as a two-bedroom unit (with a maximum of four guests) and has similar square footage and layout to other rental units at El Corazon that are listed as two-bedroom units. But, because the second bedroom is small, I chose to set it up as a one-bedroom unit with a study that can double as a guest room for one guest. This room provides quiet space, a desk, and a comfortable chair for remote working.