It's a very long way to Ras Kutani from the UK. There is the 10 hour flight or longer if you fly Emirates to Dar es Salaam, followed by over two hours on not very good roads, including an interesting river crossing, or a short flight which we declined based on previous experience, although I must admit we flew back!!
The situation of Ras Kutani is perfect, nestled around a freshwater lagoon on the Indian Ocean. Our hut, cabana, cottage,call it what you want, was open to the breezes, and contained one enormous bed, which was also very comfortable, with a huge mosquito net, which was necessary. I worry about malaria, bugs, in fact anything creepy crawly, so was more than a little concerned at the lack of things like glass windows, air conditioning, but thanks to DEET, and good mosquito nets it was no problem at all.
Outside there was a large verandah, complete with hammocks , and cushions where we could lie out in the evening amply sprayed with anti bug, and watch the sun set.
The room also had ensuite facilities with a shower, and was as you would expect furnished and designed very much by local craftsmen. 

The food was excellent, much of it seafood, very freshly prepared by the ever willing smiling chefs, in fact all the staff were full of beaming smiles, very courteous, and ever willing. It was the flag system on the beach to summon drinks that was a nice touch out here in the wilderness.

There isn't that much to do, but if you like the sea, sailing, snorkelling, surfing/boogie boarding, by the way watch the waves if you do, then you will be in paradise, with a good book.

Selous Camp isn't far away, so this would be a good place to recharge your batteries, recover from your flight, prior to a safari.