Selim's home is in a brilliant location. It's about a 15min walk to both the Grand Bazaar and the Blue Mosque. The house itself is pretty basic, but is fine if you're just looking for a cheap place to sleep and shower.
Selim's business partner may meet you to let you into the house, so I would recommend asking for his number if that's the case just to ensure the whole check in process goes as smoothly as possible.
The guys at Sofya Restaurant & Cafe a couple of doors down are so lovely, so I would definitely recommend going there for some apple tea. Arch Bistro across the road has awesome food so definitely check that place out too.