I have traveled using Airbnb homes for years. All and all this was my best experience yet (excellent hosts, excellent location, comfortable apartment, and good value). I stayed in this large apartment with family, so my experience is based on having the entire apartment for ourselves. The hosts also offer the opportunity to book individual rooms (single or double). I cannot comment on that experience, but I believe it would also work well. I strongly recommend! The location is fantastic! Yes, you need to go up 4 flights of stairs (or 5 -- in the US we count as "1" what in Europe is "0"). But as my nephew would say, you book the apartment and the fitness center is included. For us it worked wonders as in Portugal, one MUST east to one's heart content, so climbing the stairs was a good way to not feel guilty. The Gulbenkian Residence is located in the BEST area of Lisbon (residential, yet with to major malls around the corner, metro at your footsteps, many good restaurants, all around, and the Gulbenkian Park and Museum also a few feet away. You will LOVE it!