Hi there!
Singapore is not particularly well known for its boutique hotels, even though there are quite a number of them. Common complaints include expensive but tiny rooms, service level not up to standard.
I would imagine a Conrad stay to be very different compared to this Sultan Hotel. Couldn't find much info about the hotel (the hotel is less than a year old?) except these below :
http://ellenxxxo.blogspot.com/2012/03/sultan-hotel.html
http://www.agoda.com/asia/singapore/...rp=0#reviewTop
If you do stay at the Sultan, let us know your comments!