Short version: You scored a GOLDEN TICKET for having a fantastic experience in lisbon if you get to booked Ricardo's place. enough said.
Detail analysis: 1. Location, Location, Location - I would rate this apartment's location 11 out of 10: You are literally live at the heart of the city. Within two blocks away you will be at the one of the best "viewpoint" to see the entire city, along with a Rooftop bar provides good drinks/decent lunch/spectacular 360 views. Ricardo's place is accessible/walkable to subway/train/tram stations too. and the place is secured and keyless.
2. Ricardo's Guidebook - LonelyPlanet should hire Ricardo to edit their local tour book for Lisbon because Ricardo came up with his own version which is better! He suggested me to a steak restaurant and a seafood restaurant. It EXCEEDED my expectations. He is also a quick responder, giving me tips and suggestions on places to go, where to buy souvenirs for friends/family. This guy is simply the best, he will make your staying experience in Lisbon one of the kind and you will fall in love with Lisboa
3. The Apartment - You get Everything you needed for your stay; Ricardo's thoughtfulness on providing his guests' good experiences is unparalleled. He takes care of his guests seriously just like how serious Cristiano Ronaldo takes care of his celebration poses (Suuuuuuuuuuuu!!!!). You are paying a reasonable price with a premium service.
Overall, 10 out of 11 experience. You will love this city because of the stay.