Below is a copy of some info about Lisbon I put together for a friend of a friend - you may find it useful:
There is plenty to see in Lisbon. On the first full day you are there definitely take a walking tour (get information at the tourist office), and go on your own No.28 Tram tour ( beware through as I have read plenty of reports that this tram is now very popular with tourists so can be hard to get on – turn up by 9am to dodge the crowd). You will see a lot of places not many tourists go to. The tourist info office has friendly staff ready to help and is located north of the Rossio train station. Lisbon is great for spectacular vistas. There are a number of lookouts, including the Castelo (excellent place to be at sun set). The are numerous churches and museums (the Museu Callouste Gulbenkian is my favourite), and Belem is worth a day on its own (tram No15). The paving in Lisbon is fabulous and every main square has a different pattern, but it is deadly when wet. If it rains do not wear runners. If you have time, take a trip to Sintra. Instead of going to Euro Disney, you can see a real live fairy land. Be warned, it does rain there when there is no rain anywhere else. There is still plenty to see inside the various Palaces if it does rain.
Lisbon has hills, so if you want to party at night look at staying up the top of the Bairro Alto so you don't have to navigate any steps late at night, but beware the noise from bars, and dark alley ways. If you want to go to bed early and have a good sleep, stay in another district. In Lisbon the central Baixa area that is on the flat is a bit of a tourist trap. Certainly have a look at it and the Praca do Comercio at the South end, but don’t buy anything. You can pay 2-3 times for food and drink compared if you head up the hill on either side. Even the streets on the East and West sides have significantly cheaper restaurants and mini markets.
Since we were there last there has been a development of the Mercado de Riberia (fruit/veg market) with half of it being an open plan food court were there are numerous food and wine stalls, some from the better restaurants. Apparently, it is well worth a visit for lunch or dinner.
You should also try the A Ginjinha bar, at the North/East end of the Rossio (next to the hat shop). This is literally a hole in the wall that serves shots of Ginjinha - fortified cherry liquor. From (hazy) memory it is open from 10am to 10pm. After that, if you are feeling a bit light headed, then wonder down to the North side of the Prac da Figueria and try the Casa de Bifana (possibly spelt wrong). Bifana is pork that is cooked in a shallow pan in wine and some herbs. Stand up at the bar and have a Bifana roll and some soup, and a glass of meniscus wine (when you see the glass you will know what I mean). That is eating proper Portuguese working man’s food local style.
Try the Funiculars, cable cars that transport people up and down particularly steep bits of Lisbon. There are three; Elevador da Gloria, Elevador da Bica and Elevador do Lavra (which is the least used by tourist, most likely because it is furtherest from the centre of town). There is also Elevador de Santa Justa which is a vertical lift in the Baixa area.
There are plenty of excellent restaurants in Lisbon, assuming you like sea food. There are two on the steps up to the Bairro Alto from Rossio that are designed for tourists, but the food is good and reasonably priced and the view up to the Castelo is brilliant. We were in Lisbon in July 2010 and we paid 30-35 euro for starters, 2 mains, a bottle of house red and 2 beers. At restaurants they always set the table with plates of appetizers (olives, cheese, dodgy looking packaged fish paste) and bread. You will only get changed for what you use, and you can ask to have them taken away. We always go the cheese because it is bloody good. We discovered that the olives they put out aren't ancient, but have been crushed to release the pip. I have never tried the fish paste (and probably never will). I have always eaten the seafood for mains. You can get red meat; it is just that the seafood is really good. The food is cooked and served simply (None of this grandiose plate presentation). We always got the house red because it is cheap and perfectly palatable. I can not comment on deserts because I was always too full from the main. They make fantastic cakes, pastries, tarts etc so watch out, you can gain weight quickly. Oh and the meal will fill you up. A 330mm bottle of beer was mostly 1.20 in Lisbon (2010). Any more than that and you are being ripped. Bottled water is very cheap in the minmarkets - 0.20 for 1.5Lt I think. You can get it cheaper by the 6-pack.
If you use the Metro watch out for the pick pockets, they are very good. Be prepared to look daggy with your back pack on your chest, scanning side to side. You won't be targeted. You can have some good voyeuristic fun watching someone else get done. Oh, and beware the footpaths that just disappear – when you see one you will know what I mean. One moment you are on a footpath, the next you are on a thin strip of tile millimetres from the rushing traffic.
Day trips from Lisbon include the town of Sintra which is where the royals used to summer, with extravagant palaces and an old Moorish castle ruin, Mafra with a massive palace/convert complex, Queluz, which is a palace in the outer suburbs of Lisbon, as well as a number of beach resort towns.
I have found the Portuguese to be open friendly people. Try and learn some of the lingo, you will be appreciated for it. One niggle though; if you are a smoker understand that botting is a national pastime.
Try e-mailing the tourist info in Portugal. They will reply with good info
http://www.visitportugal.com/Cultures/EN-US/default.html