My visit at Boa Nova Guesthouse was very lovely and I can warmly recommend the place to all travelers, including females traveling alone. All communication was professional, caring and kind, the place was very clean and my room was huge, with amazing views to Lisbon hills. The bed was comfortable and the AC cooled the room if needed. The house was located almost on top of a hill, as is likely in Lisbon, so it was a good sport to get up there. Maria, who welcomed me on my arrival, was the kindest person and though we didn't have a common language, with the popular translation site we managed well and she booked me a taxi for my departure. The phone number provided English-speaking service too, should one need it.