Wonderful location in a wonderful often overlooked part of Mexico City for tourists. The courtyard is wonderful and a great way to end the evening with a bottle of wine.
A couple of pro tips:
1. the courtyard keeps you far enough away from the street that you can keep the window open at night without worrying about noise. Since there isn't any air conditioning, that's an important way to stay cool on hot nights. It still might be a problem if you are frequently hot at night but I believe it should help.
2. The water heater is small for the space so if you blast it in the shower you will run out of hot water within three minutes. I recommend setting it as low as possible which can double the length of time the hot water stays on. if you happen to run out of hot water, it usually comes back within five minutes. so take a shower, come out, dry off, brush your teeth, then by the time it's time to shave, the hot water should be back to use again.