My Suggestions for Lisbon
HELLO! Olá 
here are my suggestions:
To Listen Fado and have a Meal:
Good fado, more formal and expensive (around 100eur per person): O Faia (Bairro Alto) Clube de Fado (Alfama) Sr Vinho (Madragoa) Casa de Linhares (Alfama)
Good fado, less expensive (around 50 eur per person): Bela Vinhos e Petiscos (Alfama); Fama d'Alfama (Alfama); Fado ao Carmo (Carmo); O Corrido (Alfama); Canto da Atalaia (Bairro Alto); Maria da Mouraria (Mouraria)
To listen fado and have a drink after 22h30 Fado ao Carmo (Carmo) Mesa de Frades (Alfama) Fama de Alfama (Alfama)
Fado in the afternoon - (only at Saturdays and Sundays) from 16h30 to 19h30 Tasca do Jaime (Graça) Velha Taberna (Alfama)
Kind of street food typical - Bifanas do afonso
Some Typical Dish’s (Codfish) - Bacalhau a bras Bacalhau a Lagareiro
Top Restaurants Sud Lisboa; - Pinóquio, for some good Lobster; - Rocco; - Via Graça, with amazing view; - Laurentina, O Rei do Bacalhau (Awesome Codfish Restaurant); - Nicola (Rossio square)
Portuguese Typical Restaurants: A Merendinha do Arco (Baixa); - O Bacalhoeiro e o Licorista (Baixa); - Penalva da Graça (Graça); - O Fernandinho (Chiado); - Bonjardim (restauradores); - Casa da Índia (Bairro Alto); - Maria Catita (R dos Bacalhoeiros); - O Velho Eurico (Mouraria) ; - Zé dos Cornos (Mouraria); - Zé da Mouraria (Mouraria and R Gomes Freire); - Mourisca (Graça); - Muralha (Alfama); - Taberna da baixa (Baixa)
Seafood: Ramiro (Intendente); - Marisqueira do Liz (Intendente); - Sea me or get the boat in Cais Sodré to Cacilhas and there plenty good places for seafood, For example Cova Funda (Cacilhas)
Vegetarian Restaurants Food Temple (Mouraria); - Psi (Campo Mártires da Pátria); - daTerra (Príncipe Real); - Jardim dos Sentidos (Praça da Alegria); - Vegan Restaurants Kong (Vegan restaurante in Downtown); - Tataoim (Vegan restaurante near Graça/Sapadores); - The Green Affair ; - Vegan Junkies; - Las Vegan
Ramen Restaurants: Buga Ramen Rossio; - Panda Cantina Ramen; - Captain Ramen
Best Ice Cream: Santini (Portuguese franchise of 1949)
Flea Market FEIRA DA LADRA - every Tuesdays and Saturdays, from 10h to 15h/16h (there are many restaurants and coffeeshops around, and a little park/garden with a beautiful view to the river)
Live Music Jazz Bars; - Hot Clube de Portugal (Praça da Alegria); - Páginas Tantas (Bairro Alto); - O Bom, o Mau e o Vilão - every Monday - (Cais Sodré);
World Music Tejo Bar (Alfama) - special bar where musicians meet for jams
Trips: Tram 28 get the 3th or 4th station (and skip the 1station big line)
To Belém and Cascais get the train in Cais Sodré (get and charge tickets in advance in subway stations) Or just to Belém the tram 15E on the main square (praça do comercio)
To Sintra get the train in Rossio Station (get and charge tickets in advance in subway stations)
2 tips in Sintra - Pastelaria Piriquita try travesseiro de Sintra and/or queijada de Sintra
To visit in Sintra: Quinta da Regaleira, Beautiful and mystical gardens; - Palacio da Pena; - Castelo dos Mouros
Wines Red Wine: Periquita; - Papa Figos; - Monte Velho White Wine: Planalto; - João Pires; - Cabriz Green wine: Muralhas; - Alvarinho; - Aveleda
Rooftop Seen Sky; bar; - Rooftop bar Mundial; - Topo Martim Moniz; - Rossio Gastrobar; - Entretanto Rooftop bar; - Javá Rooftop; - Rooftop the art inn; - Go a Lisboa (now closed); - Lumi’s rooftop; - Bairro alto hotel rooftop
To visit - Neighborhood
Quake Museum - Belem
Museu Nacional dos Coches -Belém
MAAT - Belém
Mosteiros dos Jeronimos - Belém
Belém Tower - Belém
Padrão dos descobrimentos - Belém
Tile Museum - close to Alfama
São Roque’s Church - Bairro alto
Carmo’s church - Chiado the one without the ceiling
Panteão Nacional (the one with important people that died) - Close to Alfama and thieves market
Nice experience to go up the Hill with the bica tram
Beer Museum - Praça do comercio
Money Museum - close to the Praça do comércio
Gulbenkian museum - Saldanha
Area for shopping “rua augusta and rua garrett “
Oldest typical drink recipe Ginjinha sem rival