Sightseeing in Malmö with reduced mobility?

What options are there for sightseeing tours for travelers with reduced mobility/elderly travelers in Malmö? I’m on a short trip with family including an elderly relative who can’t walk for longer stretches and hoped to show her the city with a hop-on/hop-off bus or sightseeing boat, but it looks like there only are tours in the weekend (while we’ll be there during the week). She normally doesn’t use a wheelchair (she uses crutches or a walker), but we considered renting one for her and doing a shorter walking tour; however, I could only find wheelchair rental options in Copenhagen, and transporting one would be tricky.

I’ve probably missed some obvious things, but… what options are there?

Malmö isn't a big tourist city. Most tourists take weather and school holidays into account and visit during summer. During summer sightseeing boats depart every hour and there is a bus tour as well.

Outside of summer there is less tourism. It is still possible to rent a smaller boat and pilot it yourself, but I'm not sure if she is mobile enough to board it.

For wheelchair rental I only find one company just outside Malmö, they might deliver too if it fits them, otherwise there is bus stop close by. https://keepon.se/sida/uthyrning