I'm sorry you had a not so good experience, Amrita :-/ You're my first 2-star amongst a list of 4s & 5s. It's a little unfortunate because some parts that added negatively to your experience were well communicated before the booking and weren't surprises.
The lift part is visibly mentioned in the listing details and I also make it a point to mention this (and the kittens) in the messages before the booking, which I did in this case too. That said, 2 flights of stairs are quite comfortable for most guests. Out of the 30 odd guests so far, have had 1 guest before this who didn't like it. They requested to cancel and I refunded them fully. And I think that's the way to go about it.
And you guys had the room to yourselves, so I'm confused there :-/
That said, I'm so sorry about the mosquitos. I wasn't aware that it was bad. Thanks for the feedback on this, I'll fix it soon.
Anyhow, here's wishing that you have better experiences from here on :)