Guner and Guven were very quick to respond to our request and were both very helpful before we arrived and during our stay. We didn't meet Guner in person but Guven was living in the apartment right underneath us, which made it very easy for us to pick up the key. Before we came when I asked Guner for a few suggestions about good places to visit and he sent me a 60 page power point slide presentation with suggestions which we felt was above and beyond. He also sent us a map with directions for finding the apartment. The first time was a little tricky (but after that it was very easy to find by walking down Iskital, turning right by the Hard Rock Cafe, and just going straight till we went under the tunnel and found the "Hands Up" graffiti which was our landmark to turn on the little street and find the place 30 seconds away), and about 10 minutes on foot to Iskital Street and Taksim. The neighbourhood was a bit darkly lit and perhaps a little shady looking (though we had no bad encounters), but the apartment itself looked very recently renovated and was great. It was clean and comfortable. The second night we found it a bit cold but Guner replied immediately online when we asked him about the heat, told us the air conditioner could also be used for heat, and looked into the water heater the next day. The water tap in the bathroom was a bit loose but was still functioning ok. I let Guner know about it as I got the impression he wasn't one to let the place get into disrepair. He again got back to me very promptly and said he hadn't been aware about it. He said he could look after it after we left or have someone come to look at it immediately the next day if we preferred. We told him since it was functioning fine it was ok to wait till we left. Guvin, who lived downstairs, gave us his number, told us not to hesitate to knock or call if we needed anything, and helped us with directions and suggestions. So we actually had two hosts, one online and one in person. Guner even called the Apple Store for me to for an enquiry I had since I couldn't get an English number and saved me a trip for something that they didn't have. I'd absolutely recommend both as hosts. I gave it a four for overall experience as selecting a half star to give 4.5 didn't seem possible, with the only drawback being the slightly dark streets nearby, something not really in the hosts control. I would have no problem recommending this apartment.