I recently stayed at the Elias apartment in Sodermalm and I was satisfied by my stay.
The location was perfect - it was situated in the central location in Sodermalm, and was still close to all the major attractions in Stockholm. The apartment itself was spacious, clean, and had everything we needed for a comfortable stay.
The hosts, Elias, was incredibly friendly and helpful.
Overall, I had a fantastic experience at the Elias apartment and would highly recommend it to anyone visiting Stockholm.