I don't know how to express myself politely, as I have nothing bad against the persons themselves..
The best with this living, was the busses that came close enough, and nice neighborhood. Easy coming and leaving. I hardly saw my host, except for the moment he came home and greeted us. Looked like a sweet young guy. I didn't get to know him, as our stay was short.
But.. that's where the good things are, unfortunately. First I tried to contact him, several times the day before. I didn't know what time we could come, if he was there when we arrived. The same morning, he finally responded and said he was at work, but we could still enter the house, with the code he gave us. That was fine.
The apartment was in third floor, no elevator. We had two heavy bags to carry, so it was uncomfortable.
The next thing that happened was that we entered, and had a huge, terrible chock and disappointment! It was, untidy, dirty and frankly, disgusting. We couldn't use the shower, and toilet and surroundings where so filthy that we, felt so bad to force ourselves to use it. Nothing looked like we were expected, and frankly we (me and my 8 yr old) wanted to run away. There was no guidance in, where to sleep or, wi-fi code. We couldn't contact him, before we left our bags and found an internet cafe. I also tried to contact airbnb for advice, as I didn't want to sleep there, but failed. Next I asked, the host if refund was still possible? He was then on his way home, and promised to talk about it. We entered the house, and finally he showed us where to sleep. Before he came home, we couldn't rest anywhere. I decided to stay, because we wouldn't stay many hours more. Now, I sat on the bed, and seemingly the mattress was too big, for the bed and I fell down with mattress and all, on the floor :( . Ouch! Also the pillow looked dirty, and no cover on them. The garbage bin was full etc. I felt a bit suspicious about using the bed, as nobody minded about cleaningness. Myself couldn't sleep, but my kid slept. We were very relieved when this experience was behind us.
I am so sorry to say all this, but he may of course improve himself when he will be aware of this. I hope this will rather help him, to be a better host.