I've usually kept to some cheap hotels near Pham Ngu Lao in the past, but Duc Minh is so much closer to the airport, was on an incredibly quiet side road, and had a larger and nicer room than ones I'm used to for similar prices elsewhere. The bathroom especially was considerably nicer than usual with a legitimate shower, the towels were clean, and the AC worked just fine. Check-in (late late at night) and check-out was a breeze as well.
The best part though was the quick drive to/from the airport which allowed me to maximize sleep (not to mention the roads in Saigon can have some crazy traffic during the day and getting to the airport from the center of the city can be brutal).
I couldn't recommend this hotel enough for airport travelers!