Have you been in Sant Jordi Hostels Lisbon? 

Is an incredible place, very close to the city center.The decor is superb, and the staff is magnificent and super friendly.

I've only been there for one night, but it was well worth it.

I hope to return soon.

I leave you with a picture of a friendly couple, João and Rita, from Hippye and Corporate

https://www.santjordihostels.com/pt-br/