I had been asked this question often: "Where do I prefer?"
I had always liked my host city and they'll ask for the reasons.
Hence, in my own (layman) ways, I will try to list my own criterion and scoring system (10 being extremely satisfied and 1 being least satisfied).
Surprised! I always thought that I had preferred living in Jakarta to Singapore but my scoring says otherwise. It struck me that each criterion had an equal weighting. But some criterion are definitely more important to me while some might be irrelevant. Hence, I decided to add the green column on weightings.
Now it makes sense - I do like living in Jakarta in many ways compared to Singapore; and clearly Hamburg more than Jakarta.
An interesting point for comparision: In Jakarta, some companies install a "punch-card" system to track employees working hours, particularly those who are often late or leaves early.
In Hamburg, companies install a "punch-card" system to ensure that their employees are not overworked, otherwise, they (the employees) will be called up for counseling. So much for welfare!