I rented Sarah's apartment for my visiting family for two weeks in October. The location is excellent. It is less than 10 minutes walk to ferry port if goes to Portsmouth, it is about 5 minutes to the Gosport high street, and some supermarkets just cross the road.
The apartment is nice and clean, a big open plan living room including three sets of sofa, TV, wifi and tables. In the kitchen area, the space is big enough for cooking. Gas Cooker, microwave, plenty pans and tolls. Dishwasher and washing machine and dryer are all working fine.
Three double bedrooms are in half underground, they are all a good size and plenty furniture in each room warm . The beds are fairly comfortable, but the single beds are quite small. The downside is that there are about 20 stairs between living room to bedroom and two toilets are all at downstairs. It was not a problem to us, but if anyone who has problems with stairs, that could be an issue. One thing I would mention is that there is no disabled access (or I did not see) from the ground to the apartment.
To summarise, the apartment is nice clean, excellent location, plenty furniture and the equipment are all good enough for our daily needs. My family did enjoy the two weeks stay in Sarah's apartment.