I would recommend Daniela and her property in Bairro Alto, especially for a big group visiting Lisbon.
We were 16 guys visiting for a (classy) stag weekend and the property proved perfect for our needs.
Daniela was extremely helpful during the booking process. We weren't staying for the minimum period she required but were were able to agree to a price which was very reasonably for our stay.
During the booking process Daniela was great, and was very fast to reply to my queries.
She arranged a taxi van for our group at Lisbon airport, and although she was out of the country the weekend we visited, her friend Jose met us and helped us settle in.
The apartment itself is extremely spacious, with a good mix of spaces.
The rooms are very large, with a mix of single and double beds, the latter proving fine for two blokes to share.
The furnishings are very modern, as is the decor, which is bright and breezy. A very nice place to be.
The apartment is mostly very light, with little balconies in the living room.
The location was very central, with lots of great nightlife nearby, and inexpensive cabs to go farther afield.
So all in all, Daniela provided us with great service and a lovely spot to spend a long weekend.