We stayed in apartment 3 of the Old Lodge. Our first impressions were very positive: clean and with beautiful limestone walls. The apartment is just large enough for two guests, but do not expect much luxury. We did not mind the simplicity. There is a kitchen but it is not well equipped for home cooking. We asked the owners to supply basic stuff for future guests (salt, sugar, washing-up liquid, kitchen towels, etc.).
The location is just outside the centre of Valetta, 10 minutes walk from most shops and 20 minutes from the bus terminal. Valetta is very attractive and everything is within walking distance. We explored the rest of the island by bus. Best is to buy a tallinja public transport card. Buses take you to all corner of Malta comfortably. Don't bother paying for the hop-on hop-off buses (free for one day with the most expensive explore plus meep tallinja card). They are slow, have uncomfortable seats, and the audio system is useless because it only announces bus stops. Also, these buses need 5 hours to get around (northern route), meaning that you risk missing the last bus back to Valetta, if you get off the bus more than once or twice.
Our communication with the owner was faultless. The Old Lodge is not the best Airbnb we have stayed in, but it is perfectly acceptable as a base for exploring Malta.