I hope the OP is well and managed to find better accomodation. If it was me, I would bit the bullet and just write off the place and check into the nearest hotel as soon as possible. But regarding fake hosts: I think this is standard practice on BnB. Nobody wants to expose their real names on Bnb and be subject to abuse by unhappy guests... unfortunately that's the reality of it. From the host's point of view, I can…
I had a similar (bad) adventure on Booking.com - dirt, crawlies, so I packed and went somewhere else. Booking.com didn't do anything about refunding "oh we contacted the host and he said nah" so I called the credit card company who refunded me the transaction. Lesson learned. From then on I check Booking.com for locations then compare the offers on hotel sites and lo, often they're cheaper when booked directly. And r…
We often find that all in all the prices are not so different from airbnbs but with a lot more risk; so when you think about it, a E1200 airbnb for a month (which is hard to find in lisbon, by the way) vs a E1500 hotel, I would always pick the hotel; daily cleaning, breakfast included (usually so much I don't need anything further) and easy to cancel, extend or completely just get my money back or get relocated (especially when using the same chain like Accor).
I had awful experiences with booking.com and very good experiences with hotels.com. More than once, they rebooked us in far nicer and more expensive hotels after complaining. I found our favourite hotel that way; our booked hotel was overbooked and pretty crappy; the staff was nasty about it; one call and we got put up in a hotel 5x the price for the same number of days (2 weeks) instead swiftly and at their cost. More or less in the middle of a paradise.