I stayed this hotel for four nights. After this stay, I was wondering why this hotel is "Grand Mercure" and not "Ibis." Just because it has "executive floor" doesn't make this level. The hotel said it is 5-star, but I think it is more like a 3-star. Here's my observation.

Location (-1): Very difficult to find, and not in good neighborhoods. Can be reached via Line 3 (Jinwan Town)
Ambience (1): I think that the hotel owner is constantly building something. Lobby is nice but the hotel's only restaurant (so to speak) Cafe 180 is too small to serve everybody (although I saw only some Chinese people partying there rather than hotel guest, and its menu are so limited. Also, the hotel has two wings. South wing is more like a traditional hotel for Chinese only. the North wing is newer but the room is more like "ibis" style rather than a 5-star hotel. I think that the hotel owner is also budiling another wing or may conference center but...
Room (- 1 or 3 if you stay in executive floor): The hotel basically has three levels of room. One is executive floor room which is nice, the second is room in North wing which is newer and brighter but very small. Don't even have a bath tub and only shower stall. I think that even room in Four Points by Sheraton Pudong is a lot better and roomier than this one. The last one is room in South wing which is old, dirty, and most of all very dark. Also, both room in North and South wing has very weak "air conditioning." Eventhough I turn the individual controler to 5 degree c, it was still hot. Reminded of old 2 - 3 star hotels for Chinese only.
Staff: Trying very hard to speak but just couldn't. When I checked in, I asked I like a renovated room even though I needed to pay extra, and the check-in staff said what is "renovated" mean?? Also, there was a knock on the door for the second night at 7:00, and I had to woke up becaue it was so loud and had to open door. A Chinese woman handed a sheet of paper which said that the swimming pool will be closed from today for renovation. But, there was no mention when this "old" swimming pool will open again. And, why this woman is hammering my door rather than slip the sheet under the door. Just weired.
Facility (-3): There is no facilities except some restaurants. No fitness center, no sauna or outdoor swimming pool, no nothing. Business center is small, and staffs do not understand English very well. The only option, which was indoor swimming pool was close for renovation but didn't say when it will reopen again. Strange.
Total Score: -4 or -1
Verdict: Should avoid unless you have to.