The apartment is near the center of old town, surrounded by restaurants, shops (the Basil Lab!), and tourist stuff. It's an easy stroll to the beach, the train, and (especially recommended) the ferry between the Cinque Terra towns. The internal space is excellent: three bedrooms, two baths, a decently furnished kitchen, even a small washing machine (although no separate living room area).
The upside of the location is also the downside. Because you're right in the middle of the old town, there's a fair amount of noise from nearby bars and restaurants into the night and from moving dumpsters and garbage clean-up in the early morning. Also, during our visit in early June 2023 several of the best-known hiking trails along the coast were closed for repairs--so that's something to check if you are headed this way. We still had a great few days exploring the little town, riding the ferries, and getting some beach and swim time.