Gerardi was an excellent host and I had a great time in Porto, which is a lovely city. The flat, which is on the tenth floor of a very nice tower block, is very quiet, and has fantastic views to the east of the city (you'll love the sunrise). It is only 5 minutes on foot to the nearest metro station (Combatentes), but you can also walk downtown in about 30 minutes, if you prefer. There are plenty of small shops nearby and a big Continente hypermarket about 15 minutes away on foot (next to the FC Porto football stadium). Make sure you find time to go to the beautiful Parque de San Roque, near the stadium.