score:5
I have been there many times (around 15 times), most of the times I spent 1 or 2 days (crew member layover). I only stayed in Dhaka (the capital). Last visit was 5 years ago and once my seniority in the company was better I stopped going there. I do not have much to say but I will try to sort the things I have experienced there which unfortunately are negative in general:
Anyway, the prices are cheap there, you can do a lot with little money. Try to go to Bango Bazar which is a local market that sells clothes for well known brands at very cheap prices like 4 or 5 USD for the piece. They have factories there for the major clothing brands and the rejected or defected clothes are sent there (minor defects that can not be seen by the eye). There are some modern malls there.
I'm sorry I have said a lot of negative things but that's out of my personal experience and I haven't been to the countryside of Bangladesh so I hope things are better there.