I stayed in this apartment for a month. Overall, I have positive experience, and I would book the place again if I have to come back to Manchester.
Location: 10 min on foot from Piccadilly Station and 10 min from University of Manchester, which is great. It is located on a main road, and people that are sensitive to noise may find this somewhat less ideal.
The host: I never met him, which comes to say that he is a great host. Check-in/out is done using a key box, and I did not have any issues during my stay.
The apartment: It is smaller than it looks on the photos. This was a bit of a challenge for me, because I had to be creative in finding place for all my belongings (for a full month). Not a big problem, but something to be aware of.
The apartment itself is renovated, but it is located in an old building with other apartments being rented. The walls are thin and one can easily hear snoring, laughing, and other activities.
The apartment was quite clean, and have a very comfortable bed and pillows.