We (2 people) stayed in Kenneth's apartment for a week and it was great base for all the things we needed to do both business and pleasure.
The location is fantastic, right on the beachfront with a clear view right out to sea. The seafront promenade right in front of you extends several miles (with a brief interruption at the quaint Balneario del Carmen) all the way out past the former fishing areas of Pedregalejo and El Palo to the yacht club at El Candado. Or follow the same promenade back into town past the lighthouse, Muelle Uno (Pier One) complex of restaurants and shops, and then explore the old town nestling under the hill with its castle and Moorish palace, or continue on to the Soho area for unusual shops and eating places. If you don't fancy so much walking, buses are nearby at the Bull Ring (#3 and #11 for El Palo) or the nearest tip of the tree-lined Paseo del Parque (#16 for the Automobile Museum, Russian Museum, sculture-lined Parque Mediterraneao and another stretch of beaches and promenade in the Western part of the city).
Other positives:
A great price for this location!
Good communication and coordination for our arrival and departure. Kenneth was even able to extend the check-out time to accommodate a late afternoon flight;
Good wifi connection for both business use and streaming Netflix;
TV, kitchen equipment etc. in good working order.
Care points:
Hot water can be VERY hot, so check the temperature settings on the water heater in the bathroom;
The kitchen - as clearly described and shown in the photos - is more of a kitchenette, so there are 2 rings to cook on, plus microwave. No oven or grill;
Negatives:
I though at first that the bath had been left in a dirty condition. It hadn't, but its protective surface has been scoured away over the years and the matte tub is now stained and darkened;
There is a build-up of rust in main water pipe above the toilet and at times in the early part of our stay the flow of water in the sink was discoloured by rust.
These are both cosmetic things but I recommend a renovation of the bathroom when budget allows.