We had a great time at Hugo apartment. It is in a great location on a steep cobbled street leading up to the castle, which is bustling in the day but fairly quiet at night.
The flat itself was excellent, spotlessly clean, lovely and bright, well stocked kitchen, and lovely balcony to watch the world go by.
Hugo was an excellent host, finding out about parking for us as we had a car to leave whilst we were there for 3 nights, and even met us as we arrived at the car park to help us, and help bring our luggage to the apartment up the steep street and up to the 3rd floor (no lift).
Hugo also gave recommendations for places to eat, and the two we tried were excellent (Chapito and Cruzes Credo).
I would definitely recommend this as a great place to stay, very well located to see the best of Lisbon.