I recommend Gertrude's place for everyone who wishes to stay for a short time in Manchester. She made me feel welcomed and safe, and I could have all the privacy I needed I the room.
She was very very helpful in explaining me where are located all the bus stops and where the buses are going to, where the supermarkets are (there is a little shop in the corner of the street and a huge ASDA and argos and poundstrecher very near), which way to the city centre... Actually I was able to go to the city centre by foot (no more than 25-30 mins walk).
The room itself is small, but practical. The mattress is very comfortable. There is a wardrobe, small sofa and a table.
Internet connection is fast.
I could also use the bedroom, kitchen, living room. I had a space for me in the fridge.
Basically, all I needed was there :). Thank you very much for my comfortable stay!