The first thing I want to say is that Matthew is a good host. He tried to do our stage the more comfortable as possible. He is also a very friendly and well educated guy. From the moment you arrive till you leave the apartment he is always doing his best to make you feel good in his house.
The apartment is too close from the metro station (less than a minute walking) so you can visit all the places of interest in the city without any problem. We used to return home in late evening and we didn't feel insecure at all.
If you are thinking of renting an apartment instead of going to an hotel, Matthew's apartment is a good option.