The apartment was great with close proximity to transport modes, eateries and supermarkets. The provided amenities made the stay really comfortable as well. Moreover, the helpdesk was very forthcoming and friendly in providing information and help whenever needed. The communication before, during and after the stay was splendid!
Just a note on insects (i.e. ants and mosquitoes) which were present but was likely due to the climate during the time we were there. This issue was easily dealt with, with the help of the helpdesk. Some noise from other neighbours can be expected since the whole building is filled with fellow travelers. Also, most channels on the TV do not work so don't count on staying in watching TV, go out and have fun in Porto! :)