Media Markt

Even though it’s a huge store, I’ve lost count of how many times I’ve come here looking for appliances and they weren’t available in stock.
The staff is clueless regarding the products, if you ask anything more complicated they won’t be able to answer you (eg.: I asked which cordless vacuum would be the best for pets’ hair, and two employers had to look in the tags for the answer — that wasn’t there. They ended up recommending the least potent product!).
If you’re looking for TVs or audio systems, though, you might get lucky.

I wouldn’t have thought I would like the entire experience but I did!
No fan at all of mega retail shops and crowds in narrow shop alleys, so I usually avoid placed like this (especially) in the weekend.
My visit today, on a Saturday morning, was quiet pleasant.
I was wearing a backpack, not allowed, so walked into the shop anyway. One of the guards asked me if I would please stow my backpack in one of the lockers. Sure, I said, but I don’t have any coins. And promptly the man produced a plastic coin so I could use a locker. Very friendly and practical!
Though I knew exactly what I wanted I got distracted more than once and each time I seemed to be interested in something, one of the staff approached me and asked me if I could find what I was looking for and if s/​he could be of service. Each time friendly, open approach and not at all pushy.
When was finally ‘ready’ to find the thing I came to the store for in the first place, I asked someone for directions but he didn’t know (he was wearing a Microsoft t-​shirt so I presume he was stationed near the Microsoft gear (semi-)permanent). He offered to find out and walk me there so next time he would know too. He too was very friendly and willing to assist and go a little out of his way to learn more about the layout of the huge place.
All in all a very pleasant experience.
Two years ago I bought a washing machine there and the delivery service was perfectly on time within the time frame they indicated.
Easily reachable by train, metro, and car.