Diogo was very helpful. He showed me around the apartment, left a bottle of wine, cheese, water in the fridge and some other stuff. He gave me a really good tips on places to visit and restaurants and checked in with me during my stay to see if I needed anything.
The apartment is in a very nice old building incredibly well located. The area is full of restaurants, bars and near many of the sights. It's also less than a block away from the metro.
The apartment itself is amazing, high ceilings, lots of space and light, great artwork, very well furnished with everything you need to have a very comfortable stay.
I'll definitely stay here again next time I'm in Lisbon