We had booked the Neptun through Booking.com, but when we arrived we were actually booked into the Royal Palm Hotel which is one of the hotels in the Importanne Resort.
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Aside from that, we had a beautiful room (a suite actually with two bathrooms, two wardrobes and a small lounge). We had booked a panoramic sea view double, which indeed we had. A stunning view of the whole bay from a lovely veranda. The room had good facilities, decent hairdryer, plenty of toiletries and a huge bed (really very wide) and it was quiet for a decent night's sleep.

When you arrive at the reception you are given a map of the resort and imagine you will never find your way around, but its very simple. There are four restaurants, nine pools (we only swam in one!) and you can also swim in the sea from the rocks in front of the hotels (I didn't fancy that as there are some sharp looking rocks! But good for those who enjoy sea swimming and kids with snorkels)

Breakfast was served in The Castile restaurant, this is self service (even though an a la carte menu is mentioned n the hotel information I never saw one). The breakfast is varied, hot food and cold meats, cheeses, bread etc. It is not freshly cooked, the scrambled egg lived up to my expectation of buffet scrambled egg ie thick and yellow (why do hotels bother?). On the whole the breakfast was good and you could have as much as you wished. Service at breakfast was a bit hit and miss, we waited quite a while to get tea and coffee even though there appeared to be plenty of staff.
The staff were generally friendly and hard working in the hotel.

The pool we swam in was fresh water and adults only. The water was clean and the pool area was also clean with an ample number of loungers and sunshades. As said there are nine pools, some are adults only and others are family orientated.
There is also a spa offering various beauty treatments. I didn't use the spa so cannot comment on this, but it looked very pleasant.

The hotel never appeared busy even though we were told it was very full (we couldn't get a late check out!). I think the sheer size of the resort allows for this, we never knew where all the people were!!

I was pleasantly surprised by the Neptun (or Royal Palm, I am still not sure where we were placed). The place is spacious, clean and served by decent restaurants (we ate at two)
Nothing negative, apart from the lack of late check out, but that's just me. I think, whenever you book ask for a sea view. It really is worth the extra money and we saw some of the other views which weren't very good and you need to see the fantastic sunsets that Croatia has to offer each evening. Try the Bluesky Lounge for a really great view of this.

The most stunning amazing views we had a premium family suite 2 adults and 2 teenagers rooms very spacious and our view was to die for. There is no sandy beach at this hotel but lovely to sit on the rocks on sunloungers and get into the sea loved seeing everyone jumping in such fun , we we’re Half board breakfast was ok we moved from dinner in the Neptun Restaurant to Zoe’s great move much better service and food and of course views I would recommend doing the hotel 3 island boat trip with Captain Robert was fabulous fantastic day out you can book through guest relations pools lovely and mine loved the gym I had a massage in the spa again would recommend staff friendly and always helpful thank you we will definitely return

I visited the 5* Royal Blue hotel part of Dubrovnik Importanne resort back in July 2017 and was not planning to come back again due to bad service experienced at that super modern, architecturally superb hotel (see my review).

However, finding good accommodation in Dubrovnik in August is far from easy and with a group of friends we decided to give a chance once again to Neptun Hotel (4*) part of the same resort. The price paid through booking.com was by no mean cheap. 275 € for bb and additional 10€ per day.

First impression of a hotel is its front desk. Although booking.com explains that credit card remains at hotel’s disposal as collateral in case of cancellation or other accidentals, the front desk officer asked me to write my credit card details and leave them at the custody of the hotel for 5 years (see the form at attached photo). I rejected and asked to block a certain sum as a collateral and at the same time to settle the room by advance charge. The whole check-in process took good 20-25 minutes.

The room (see photos)

Modern design and furniture and pleasant decoration.

Wardrobe in mess with random hangers and couple of torn tags and a earbud left in from previous guests and not cleaned by house keeping.

Safe deposit locked and not ready for use.

One of drawers in drawer chest broken with nails exposed.

Silicon (or similar stain) on a bathroom wall probably from torn hanger.

Shower handle missing a part.

Only dark curtains with no transparent set of curtains to provide privacy at the room.

Amenities:

The resort offers several beaches (mainly rocky), swimming pools with fresh and sea water as well as several restaurants. When I wanted to add a charge from one of beach bars to my room, surprisingly I realized that the front desk has never taken a collateral from my credit card. After a brief discussion with the front desk I was reminded with a tone of warning by f/o clerk that “I refused to leave a written authorization at the time of check in”. After a brief discussion with front office manager I simply realized once again that Importanne resort is an excellent ideal destination for all inclusive guests and cannot care less (except high charges) about more specific customized expectations by individual travelers used to high level of service and value for money elsewhere. That said, probably only all inclusive guests are paying right price for that level of service. See a random price for 3 night stay with charter flight from Hannover.

My take: Individual guests are good to compensate a shortfall created by all inclusive guests.

AVOID BY ANY MEAN IN CASE YOU VALUE YOUR MONEY AND EXPECT A SERVICE AT LEVEL OF PRICE PAID.