We were a group of four students staying 8 weeks at Grandma's House.
We were really happy with our choice and we would recommend it to anyone else coming to visit, it quickly felt like our second home.
The house is over 100 years old in a very quite neighbourhood, only a short walk to Belem.
There were some concerns on occasion, i.e. showers went cold or AC not working, but not a surprise when you stay so long in one place. What's important is that our host Edgar would always make himself available to resolve any concerns so our stay was as comfortable as possible.
Edgar really cares for his guests and wants you to have the best experience, we even arranged day trips with him where he showed us outside of Lisbon: Cascais, Sintra, Cabo de Roca and these trips made for some incredible memories.
The house is old and has its pros and cons, but it isn't without its charm and was comfortable and spacious.
What's important to consider is that when you pick grandma's house you get more than just the house, you also get Edgar, a host who really cares that your experience in Portugal is the best it can be.