We never met Manuel in person but had no problem contacting him, especially since we arrived at night.
The house is exactly as shown in the pictures with fully equipped kitchen and bathroom, and at a short walking distance from restaurants and public transportation (5min walking). There is even a file at the apartment with suggestions of where to eat and what to visit.
There were only 2 minor details that may be worth mentioning:
1) the window shades don't block the outside light completely, which means as soon as the sun rises the room will be dimly lit.
2) the mattress is comfortable but a bit noisy when turning or moving around.
Mind that these are some minor details and didn't compromise our stay in any way.
Overall we had no complains and never needed to contact Manuel again after getting the key.