Instead of taking one of those Hop-on Hop-off tourist busses, I recommend bus line 5 for an alternative tour around the city. The line covers all the socioeconomic zones in Malmö, so you get a glimpse of different neighbourhoods.
The line starts from Västra Hamnen, one of the most expensive housing areas in Malmö. There you can find the Turning Torso, the famous landmark of the city, and other examples of modern architecture. Moving on towards the city center, the line passes Central train station and other stops surrounding Stortorget and the main shopping district.
Continuing along Amiralsgatan, the next stop is Folketspark, in the heart of the hip area Möllans. Make a stop there, have a picnic at Folketspark, or grab a coffee from some of nice cafés around Sankt Knuts torg (I recommend Uggla Kaffebar). From Folketspark, line 5 continues towards Rosengård, infamously know as one of “the most dangerous ghettos in Sweden”. I strongly recommend leaving prejudges aside and heading towards the suburbs. Get off at Rosengård Centrum, and make a stroll around the area to observe the architecture, which is the outcome of the Swedish Social Democratic Party’s Million Housing Programme going back to early 1970s. For football fans, a visit to Zlatan Ibrahimovic’s old house and courtyard in Rosengård is a must.
Buy a day ticket from Skånetrafiken application, which gives you the freedom to ride around all the zones of Malmö, and you can create your own Hop-on Hop-off tour.