I had a quick stop through Amman (flight arrived at 5pm and I had to travel the next morning at 10am) and it was my first time in Jordan so I wanted a safe, reliable and centrally located hotel from where I could venture out to see as much as possible in the quick stay that I had. I found the Grand Hyatt to be suitable for this purpose.
I generally prefer boutique hotels or a more luxurious option, but from what I read it seemed like the Grand Hyatt was in a better location than the Four Seasons. I recognized that I wasn't going to be able to do much in an evening, but I still managed to have dinner at Hashem (AMAZING - must visit), walk around downtown a bit (some shops were still open) and hang out at a cafe for a couple of hours to enjoy shisa on Rainbow Street (a fun experience for a Friday night!). The hotel itself was very secure and convenient with its 3rd Circle location. It's not run down as I had read in previous comments, but it's also not super new (more in between which was fine for me). The bed was very comfortable and the service was fine. The bathroom was spacious, clean and nice. I loved the gift that was delivered to my room upon check in - a small stuffed animal camel with "Jordan" written on it. The hotel is a great choice for business travelers. I would definitely stay here again!