We had a three-night stay at Ratonda and loved every bit of it. Our room was classy, cozy, clean and spacious and the staff was very helpful and nice. The hotel has a small gym and a sauna which is a positive add-on. The restaurant, Liberta, had a versatile breakfast buffet with a wide variety of meat products, fruits and vegetables which was nice. The restaurant also serves during lunch and dinner times but unfortunately the quality of food & service does not comply with the prices: I had a beef steak (24€) one night which was supposed to be cooked medium. Instead I got a well-done steak that had tendons all over it + the side dish was a set of deep freezed potatoe wedges. Not worth the 24€ at all. Oh, and we had to wait for the food for over an hour although we were the only customers there. Fortunately the city of Vilnius has a wide range of quality restaurants with very low prices so you have options.
The location of the hotel is perfect. It is basically right in the heart of Vilnius within walking distance of the city centre and some major attractions (eg. Cathedral Basilica & Gediminas Tower). There's also a bus stop a few hundred meters away in case you want to go explore the outskirts of the city. Public transportation works like a charm in Vilnius and it is very cheap to move around (1€ per trip but you can buy a travelling card, eg. a 3-day card cost 9,5€).
I highly recommend the hotel and would definitely stay there again in case I decide to revisit Vilnius.