I spent one night at Isa's apartment with my sister. Her hospitability has made us truly enjoy our brief stay in Porto.
The apartment is a 30 minutes walk away from the town center, but one could easily take the metro (Marques stop is just around the corner). There is also a supermarket across the street.
The apartment is spacious and you'll be surprised by the peculiar style after which it has been furnished. The room is big enough for two people, although the bed, being a queen-size, can be just a little bit small for a couple. Isa has also got a sofa-bed in case one would rather sleep alone.
Isa is such a wonderful person: she made us really feel at home - from meeting as earlier than expected to letting us keep our luggage at her apartment the day after our stay!
If we'll be back to Porto, we'll gladly stay at Isa's again.