Our stay at Diogo and Filipa's place was an overall great experience. The apartment is very bright and neatly arranged which instantly makes you feel at home. My boyfriend and I stayed at the place with another couple and the size fit perfectly for 4 people.
When we arrived Diogo met us at the apartment and showed us the place. He was very nice and welcoming and even invited us to a music event he was taking part in that weekend.
The apartment is equipped with everything you need including clean towels and a freshly made bed for everyone. There's even a portable wireless router wich is amazing! It really makes it easier to find your way through Lisbon. During our stay at the apartment we had two days of rain which resulted in some water dripping from the ceiling in the two beds room. This wasn't very nice but we told Diogo and Filipa about it and I'm sure they're gonna take care of it as soon as possible.
The location is great for exploring the city by foot as well as by bus and even a taxi is very affordable (e.g. 5€ to Bairro Alto) and makes going out at night super convenient.
Diogo told us that parking outside is fine as long as you don't leave anything of value inside your car and I strongly encourage you to take that seriously because all of our friends' carpenter tools as well as their radio were stolen from their bus right outside the place.
Other than that we enjoyed our stay very much and Lisbon is a beautiful city! We hope to come back soon.