We had a really wonderful stay here in early November 2017. We were here on a family vacation as three families (my parents, my wife and I, and my brother, sister-in-law and niece). The location is really amazing for the property - it's walking distance from a few Poipu beaches, a couple of nice resorts (Grand Hyatt and Sheraton), and a great cafe (Little Fish). Additionally, it was less than 10 minutes away from multiple local shopping centers in Koloa (including food options) and within 30 minutes of Lihue. All the activities we booked were easily accessible from Koloa and the weather was pretty good overall in this part of the island (not too warm/dry and not too wet).
The house itself is overall in great shape, though does have a few cosmetic oddities (missing baseboards and such). The pool wasn't really heated (slightly disappointing given that it was advertised prominently on the VRBO page), but that didn't really bother my niece as she loved jumping in. There's only A/C in the bedrooms, which was a bit concerning for us when we arrived because the house was extremely stuffy and warm, but the weather drastically improved after the first day and with the windows open the house got much cooler. A/C is still a must in the bedrooms for nighttime comfort and was initially broken in 2 of the 3 rooms. A very nice man (the owner, maybe?) did come by and set up a temporary A/C in one room and fixed some lights in the master bathroom. Afterward, when we reported the A/C not to be working in the third room (it was pushing out air, but the air was not very cold at all so it was having to work quite hard constantly), we received no response from Jannli. This was a little off-putting but was not a huge deal so we didn't push it further.
The kitchen is overall a good shape - very basic pots/pans/knives/spices, but it was sufficient for breakfast and some grilling. We brought our Fire TV stick and had no problem setting that up in the main room. And the patio on the top floor is really wonderful - we spent a lot of time up there in the evenings.
If you're ok with a bit of road noise in the living space and not having central air, this is a great home to vacation in.