We stayed at Sultanahmet Gardens twice for a layover on the way and back to Mumbai. Tansel was available to welcome us both the times. The location is right in the middle of old istanbul and you get the feel of living in the middle of a historic city. Most tourist sites are walkable within a 10-15 minute radius.

The only issue is explaining to the taxi driver how to get there. The first time we tried the taxi driver took 15-20 minutes driving around even while on the phone with the host. Not sure if he was actually lost or acting to run up the meter. The next time we just dropped off near Arasta bazaar and walked to the place.

Otherwise had a pleasant stay during our layover in Istanbul. I recommend this place to enjoy the Sultanahment neighborhood.
Tons of restaurants, stores, cafes also close by.