ok... imho. its no point travelling all the way to Pasir Ris white sands. cause its a run of the mill shopping centre. Changi is not worth catching too.

Yes the other mention is right, Ya Kun style coffee and kaya bread can be found in the normal traditional coffeeshop. Ya Kun is the biggest brand franchise with the best quality control.

There was a spa feature just in the local papers and it covered a lot of the new spas like Amiga, W Hotel Spa, and lotsa other new spa developments in Sentosa.

New Majestic is a good place to stay... opposite is Oso. Walk to Keong Saik and you can find the Char Siew roast pork noodles. I just went to KS last Fri and it is very buzzing. KS then junction of Teck Lim. Move on up to Duxton Hill.

Also a lot depends on what kind of traveller are you?
Are you a hipster traveller who wants to go to the cool bars and cafes and restaurants?
Are you sights oriented then Gardens by the Bay is a must visit (oh the gardens are HUGE... the main dome areas can get crowded on weekends but the outlying areas are good for a walk and pack your wine to drink by the man made ponds)
Are you a mainstream traveller? Then mustafa might be a good place to get souvenirs.