Casa Carmen is beautifully decorated and located conveniently in one of Oaxaca's best neighborhoods. It's within a few blocks of all of Oaxaca's gourmet restaurants, the Zocalo, right across the street from Jardin Etnobotanico and there is no shortage of amazing street food around the hotel. However, there were plenty of issues that affected our comfort, which were enough to downgrade my rating. First, we arrived and our AC was broken, we told the attendant and he said they could not fix it until the next day (which was Sunday). Aside from this no other solution was offered to us, we had to ask to change rooms or even for a fan, both options were not a possibility at the time of our arrival. The next day, I had to consult the concierge on their planned solution, and they said they would bring a fan, finally I asked if we could change rooms and after some hesitation she relented and said we could occupy another room after the guests had checked out. Our new room's AC worked fine, but the shower head would blast water all over the bathroom if it was turned up all the way. Although not huge dealbreakers, this lack of attention to detail and not quite 5 star service would dissuade me from recommending this place. To their credit housekeeping was impeccable, and our room was always spotless every time we returned to the room, a welcome touch after a day of exploring beautiful Oaxaca.