Abi is a very friendly host! The appartment is very nice and large. Airco for the two bedrooms. The appartment is an old building and this gives it a very nice ambiance and fits the city very well. You need to go up two stories by stairs, but that was no problem for us even with a small kid. Abi was kind enough that we could leave our stroller downstairs, so we didn't need to carry it up every day. The environment is quiet. For decent restaurants you need to walk a bit, but they are there. But if you are looking for a location full of life with plenty of bars and restaurants, than this is not it.
For Valetta you can take the big ferry or the small wooden boats. prices are cheap and it takes 5min. During our stay the ferry didn't go because of a swell in the harbour. That meant taking a much more expensive taxi or bus to Valetta, which makes the location more expensive compared to an airbnb in Valetta itself (which are normally more expensive) if you want to go to Valetta every day. With good weather this shouldn't be a problem though.
We had a lovely stay and would recommend the location for a more quiet stay in the city.