Our stay at Jensen's for our 10th anniversary was a delight. Our cabin (#2) was roomy, super clean and charming.
They take problems/issues very seriously. Our AC didn't seem to be cooling properly the first night, but someone came by three times the next day to fix/monitor it to ensure we'd be comfortable. We were impressed and appreciative.
The three brother-owners top off the experience with such friendly and accommodating attitudes. They treated us like old friends.
Upon checkout, we got to see a couple of other cabins and one of the apartment units, for a possible return trip. All of them were similar in style and charming, so it seems you can't go wrong. However, if you have a choice, I would advise avoiding the cabins next to the road and perhaps even the cabin on the water, because privacy might be an issue with all the activity and cars up front at the marina.
The only downside for me was that the walk to the beach was a little longer than I liked. BUT is only a few steps away from the Bubble Room, where we like to buy ginormous, to-go pieces of their orange-crunch cake to feast on. You're also a short drive away to the Old Captiva House, where we had a fabulous anniversary dinner. Go next door to the Crow's Nest after your meal and dance to the lively music by the awesome Capitva Band.
Jensen's is not a place for people who like to be pampered at cookie-cutter chain resorts. Instead, you must have an appreciation for unique, mom-and-pop places with character.
We hope to return and to send as many of our friends there who want recommendations for Sanibel/Captiva.

WE would stay here again and again. It was clean and very relaxed. We had great service.

Such friendly people!! Booked the water taxi to North Captiva for us. Saw maybe 10 other people on that beach. Great shelling there. Walked to Captiva Beach and great restaurants and bars from our cottage. Parking is limited for the beach, so this is a definite plus. Planning to bring children and grandchildren later in the year. Next time, we will stay longer and buy groceries in Fort Meyers before we cross the bridge.

Jensen's Twin Palms Marina and Cottages is one of the best spots in Florida, in my opinion. If you want fancy, room service, pool, etc., this is not the place. If you want a piece of old Florida, where you kick your shoes off on the screened-porch as you walk in and never put them back on, this is the place for you. The Jensen brothers are the best in the world and you'll be surprised to hear an impromptu concert occasionally on the back porch at the marina. I have stayed there numerous times and absolutely love the cottages -- they are clean, comfortable and very well cared for. The beach is a short block's walk away, as is the Mucky Duck. The manatees are normally on "display" right in the marina and the waterways in and around Jensen's are some of the most beautiful in the world. Again, this is not the place to go if you want pampering -- this is the place to go to relax and enjoy yourself. For more attention, go to the Jensen's other place, Jensen's on the Gulf -- you can get all of the pampering you want there -- beach-side. I love the Marina, though and all of the people around there.