One expat talks about moving to Dhaka and offers tips. Set the right expectations. When searching for an apartment, check the water supply, find out if there is construction nearby and how close, more.
Mattress and pillows. No need to bring sheets, duvets, winter clothes.
Set right expectations. Visit Dhaka first before you decide. Try in May to July when families are ending contracts. Check for mold. Check the water supply. Check any possibility that a construction project may start nearby. If there are one floor houses around, the risk is high that a 6 to 10 floor building will start below your window. By the time it reaches your windows you can touch it by hand. This is close together they build their buildings. Check in clubs. There are lots of info posted there. Check Deshperate in Dhaka on Facebook too.
Apartment. Yes, people do live mostly in apartments here.
Basically my company decided. All expats lived in Gulshan area so we went for same. Baridhara seemed nicer but it was more expensive too. Now they have started construction on high buildings everywhere in both Gulshan and Baridhara and it is quite tough to live in these areas. In a few years these areas will not be so called residential anymore. My company used an agent to see apartments.
Higher. It is difficult to compare, but for a decent apt in Bucharest it will be a few hundreds euro. In Dhaka, it is thousands.