Pack several cotton T-shirts and lightweight shorts or trousers. Cotton dresses and flowy tops for ladies will be a comfortable option. Comfortable walkers such as sneakers or sandals will also do nicely. As Singapore is small, you can easily explore most places on foot. However, do pack a nice dress, trousers and a pair of shoes as well. Especially if you want to visit a nice restaurant or bar, as there is plenty to go around in Singapore. If travelling during the monsoon which is from November to January pack a light cardigan or sweater, as it can get mildly chilly at night. In terms of accommodation, a hotel like PARKROYAL COLLECTION Marina Bay is a nice option to consider as well.