Moving furniture + buying furniture services

Hello r/darmstadt!
I'm happy to report that I survived the living hell that rental market is in Darmstadt and got myself a nice flat :)
Now, I'd like to furnish it, as well as bringing in some personal belongings that I currently have in a self-storage place. Do you have recommendations for (hopefully not too expensive) companies that might do it? We are talking about 14 boxes and just a bit of extra furniture.

I'd rent a van myself but the flat is 3rd floor without an elevator so...

Second point: I'd like to buy some furniture. What's some place where I can buy a bed, sofa etc. and actually get it up to the third floor and assembled?

Thanks in advance!