The Hotel Britania is located at Rua Rodrigues Sampaio 17, a road that runs parallel to Avda. da Liberdade, one of the main thoroughfares of Lisbon. It is located in is a business and quality residential area
However, there are several areas with good cafes/restaurants nearby.
1) Turn right out of the Hotel and walk down Rua Rodrigues Sampaio 17, turn left and then right into Rua São José! Walk down Rua São José and, after about 900m, it eventually will turn into Rua das Portas do Santo Antão. The final part of this route is a well-know tourist "ambush-alley" lined with restaurants with persons seeking to inveigle you to enter there establishment to partake. Food prices in some of them are not bad BUT watch out for the wine prices!!!! There have been some horror stories reported on this forum.
2) If one wants english breakfast, go to the cafe I referred to previously. Turn right out of the hotel, turn right again, proceed one block and then cross Avda. Liberdade. On the far side, turn left and proceed down Avda. Liberdade about 600m, passing Metro Station Avenida. You will come to Pastelaria A Baiana, Av. da Liberdade, 59, Lisboa.
They do English breakfast, continental breakfast and lunches with "plate of the day" (Prato do dia.)
You will also pass en route Cerveijaria Ribadouro. I have never eaten there but it is a well known eatery.
3) Along Avda. Liberdade you will find cafe/bars on the two tree line boulevards that run the length of the street. You will also find some upmarket restaurants.
I know from walking through the area that there are quite a few other restaurants in the area, some very expensive,some expensive and some cheap and cheerful!
4) Another restaurant I have eaten at about 750m away is the
Restaurante O Cacho Dourado
Rua Eça de Queirós, 5
1050-095 Lisboa
213 543 671
Turn left out of the hotel proceed two and half blocks up Rua Rodrigues Sampaio until you come to Avda. Duque de Loulé. Cross this road and turn right. Continue two blocks along into Rua Eça de Queirós. The Restaurant is on the left. This is a typical Lisbon restaurants serving traditional Portuguese Dishes. At lunch time it is full of business folk eating "Prato do Dia"!.
Check out the Tripadvisor restaurant review for this establishment here.
There is a substantial choice of eateries in the neighbourhood.