"We had 2 nights at the Casas, before moving to a villa - we were in Villa 2, one of the 3 bedroomed villas. Highly recommend booking a transfer with the hotels - they have their own Eco people carriers, very comfortable, good value for airport transfers (ours between Casas and Villa was complimentary) and they will look after you, checking you in at the Suites then driving you/luggage around the corner to the villas/bungalows.
These are basically a small gated community just behind the marina. You are above some of the restaurants owned by the same group. We heard nothing from these once inside the villa but obviously it's a lively marina so you will hear a buzz from your excellent, enormous terrace. That's at the back - your private pool and very nice loungers are at the front.
We found the villa very comfortable and with excellent air con, which we appreciated very much as the humidity was off the scale whilst we were there. I'm used to mainland Spanish heat but this was something else and meant the 'feels' temp was + 5 on the 35-36 it was generally whilst we were there.
The villa seemed very well equipped to us and suited us perfectly. There are 2 small supermarkets at the end of the cul-de-sac which had everything we needed. You could have breakfast out if you wanted - including at the hotels (not cheap to do this, though).
We found the villa pool was slightly too warm after a day in the sun and preferred swimming in the Suites pool in the afternoons - bigger and felt fresher. You can use any of the pools in the hotels.
We found the marina a bit busier than we're used to but it has the advantage of loads of restaurants, many pretty good. We didn't try many of the hotel-owned ones in the Gastrohub - but we liked Sensa by the beach very much. We had gelato from the place opposite the Casas every day! Our favourite of the more traditional Spanish places was Asador Onegin. It was great. The new smash burger place was also good.
We went into Ciutadella one day to explore - we got a cab (c 15 - 20 euros) which the hotel ordered for us and showed us where to be dropped off/find a cab rank (no Uber in Menorca) and also gave us a map. Ciutadella is gorgeous but it was a little too hot and humid for comfortable wandering, to be honest.
You're a short walk from a nice but busy beach, which is just opposite the Casas.
We had a few technical hitches when we were there - we lost water supply pretty much every day. Only for 20-40 mins but a bit inconvenient. Maintenance were on it quickly but hadn't figured it out by the time we left - though we were told on check out that they thought they knew what the problem was. I'm sure they will sort it out. We also had intermittent WiFi which, as we were with our teenage son, meant buying extra data! But these weren't big deals for us - maybe for some. Overall I recommend the villas - it's great having a full service arrangement (daily cleaning, if you want) and all the facilities of 5 star hotels on your doorstep but the privacy and independence of a villa."