Hugo's place is a great find for any traveller to Lisbon. It is super well placed in the old city where the hustle and bustle is but nonetheless very quiet as it is on a side street.
You would be sharing the apartment with him and perhaps another people because he rents out two rooms for airbnb. The place is ok, rather old but it has all you'd need to feel comfortable. The door to the bathroom doesn't have a lock and bit more care with the cleanliness of the room would be appreciated.
Hugo is a friendly and very helpful person, also easily reachable.
For anybody not interested in luxury but rather in functionality and placement, it's surely worth it.