first of all, recommend ORM to all who travels to Porto.
We stayed for 2 nights and the place was clean, tidy and well located in the town. near S.Bento train station(3minutes walk) and the beautiful bridge. and also near a very good restaurant which named tapabento, we had have two dinner there, restaurant needs reservation.
communicated well with ORM, and they gave us local tips about restaurant and sights. we checked out at 12.00, but they let us left our baggage to 15.00 (we had our flight on 17.00) it was very kind.
anyway, had a good time in Porto.