Originally Posted by SQTraveller

I can't give you an opinions on the quality of those hotels you've booked. They look nice enough. 21 Carpenter is very conveniently located near Clark Quay MRT. Labrador Villa is a bit further away as you say, but anwhere in Singapore is easily Grab-able.

With respect to Bali, 3 nights should be sufficient but when planning your itinerary be prepared for immense amounts of traffic.
I was there in September and if you travel anywhere outside of the Nusa Dua area, you just need to expect to be stuck in a jam. I stay at the Courtyard in Nusa Dua and in Seminyak on different occasions recently and found the CY Seminyak a real pain to wait for a car and to get out of once the car arrived. If you plan to go visiting the sites, I would hire a driver before you arrive. They will be waiting for you at the hotel reception in the morning and will stay with you for the whole date

Bangkok is either a short stay like you're doing, or a long stay. You can do all the sites and try out lots of different food for 3 nights. However if you want to venture further out and visit somewhere like Ayutthaya (the old historical capital) or the Amphawa Floating Market it will take a whole day.

I have no opinion on Krabi/Phuket so I'll leave others to tell you about it.