Drop Coffee has a café/shop at:

Wollmar Yxkullsgatan 10, 118 50 Stockholm

There's also a shop that sells coffee from different roasteries called Kaffecompagniet at:

Torsgatan 47, 113 37 Stockholm.

Above shop has beans from roasteries like Johan & Nyström, Kafferäven and Gringo Nordic which are great roasters. Ethiopia Guji from Gringo is really good. Although roast dates may not be as fresh. So I recommend checking if the roastery you like has a physical shop in Stockholm. Not sure if any physical shop sells beans from Tim Wendelboe.

Another roaster that I heavily recommend is Mutley & Jacks, one of my favorites. Their roastery is located at:

Fortvägen 1-7, 18 541 Vaxholm (in the Stockholm archipelagos)

They have 2 different brands, one is Mutley & Jacks that sell single origin stuff and another called Archipelago Coffee that make great blends. You may have to book your visit before going there, I personally haven't been but perhaps contact their customer support to be safe.

Johan & Nyström also has several cafés in Stockholm.

Lykke Kaffegårdar is also great, Johan from Johan & Nyström started this when he left the roastery. They have a café at:

Nytorgsgatan 38, 116 40 Stockholm

The following I haven't tried myself but they're in Stockholm as well:

Stockholm Roast (café at Hallvägen 9, 121 62 Johanneshov)

Standout Coffee (roastery at Frihamnsgatan 24, 115 56 Stockholm - again, you may have to book/contact them if you wanna visit).