We recently spent 3 nights here and in spite of some of the negative comments that have been posted, we had a totally positive experience.
Our 13 yr old son required emergency surgery, and in assisting us to find immediate medical care, the staff could not have been more helpful and accommodating. In fact, throughout our stay, there was absolutely nothing that remotely resembled the "attitude" that some reviewers have mentioned.
This is, as noted, a renovated Comfort Inn, and the upgrading of the decor and amenities is certainly unmistakable (modernized, if small, bathrooms with upscale toiletries, flat screen TV's, nice furnishings, etc). As the standard rooms were left the same size as the Comfort Inn configuration, they were a bit on the small size, although certainly more than adequate. The terrace/bar/restaurant area in the back was gorgeous, overlooking the bay and the upscale Bayfront complex. The pool area, while small, was very inviting and at no time were we bothered by the busy Rt 41 that bordered it.
Our only really negative comment pertains to the food. We did not experience the very mundane $10 breakfast buffet (the same sort of assortment that many hotels offer for free), but we did have lunch one day, and it was very overpriced ($80 for 4 of us) and at best, extraordinarily mediocre. My sons both had "open face steak sandwiches" ordered medium rare, and what they got were pieces of unidentifiable meat that were very very well done. Additionally, the promised french fries morphed into chips!
So...the question is "what makes a hotel a boutique hotel?" If it is, as noted above, upgraded furnishings and a flat screen TV, then Bayfront Inn on 5th certainly qualifies. In my travels, however, I have always felt that a boutique hotel combines a number of components. Perhaps this is much ado about nothing, as we really did enjoy our stay and would definitely return, and if the owners want to call this a "boutique hotel," well, so be it!
One more thing. The location was ideal. The property is 2 blocks from the 5th Ave shopping and dining district, and it was very easy to avail ourselves of this gorgeous area without having to take our car out.
While the room prices here are quite high for what were formerly cookie-cutter low end chain hotel rooms, given the high prices for lodging in and around Naples, we felt that the cost was not out of line.
We will definitely return when we visit Naples again.