My husband and I stayed at the Mandarin for 3 nights at the end of February. We were assigned a room, and told that the bellman would be up with our luggage shortly. Unfortunately, when we got up to the room, we realized that we were not the only guests staying there - someone's whole luggage (including a women's purse) was spread out in the room. We went downstairs, received a lukewarm apology (the bellman was more apologetic about the situation), and were assigned another room - turns out this one is a lower category than what we paid for! My husband called the front desk, where they told him that the hotel was completely sold out and that the soonest they would be able to move us would be hopefully the next day - after I got on the phone (I am currently 5 months pregnant and had just about enough for one day) they said that a bellman would be up right away with a new key for another room. It took 2 more calls and a total of 45 minutes to have this happen.
More unpleasantries. There was another guest staying in the hotel with the same last name as me. Surely something that happens quite often in large places, as my name is not uncommon. This issue, however, was too much for the Mandarin staff. The front desk, the spa, the concierge and even the pool bar ALL confused our names, despite the fact that every time I called I left my room number. We received the other guests confirmations for spa appointments, were billed for their food, given their restaurant reservations. Again, a barely lukewarm apology from the front desk regarding our issues at checkout, even as they were taking the other guests charges off our bill.
Also, the directions the concierge desk gave to any location were always wrong - this was shocking to us since there were multiple staff giving us directions at different times!
We did try the spa, and found both therapists very good for the massages (I had the prenatal massage, my husband deep tissue).
We would not return to this location, rather opting for the Four Seasons where our experiences have always been positive. Further, based on this stay, I doubt we would ever stay at the Mandarin chain again.